MG Car Parts UK - Quality Used & Genuine Parts

How to Replace MG Headlights

MG headlight replacement is straightforward on most models. Whether replacing standard halogen units or upgrading to LED headlights, this guide covers modern MG ZS, HS, MG4, MG3 models and classic MGB and MGF variants.

Step-by-Step Instructions:

1. Open the bonnet and secure it safely. Locate the rear of the headlight assembly from within the engine bay. On modern MG ZS and HS models, access is good with reasonable engine bay space. On MG4 electric models, the front storage area provides clear access to headlight mountings. Classic MGB models have simple accessible headlight bowls mounted directly to front panel. MGF has more complex access requiring removal of front undertray or wheel arch liner.
2. Disconnect all electrical connectors. Modern MG headlights typically have 2-3 electrical connectors depending on specification including main beam, dipped beam, and side light connections. On LED-equipped models, there may be additional connectors for control modules. Press the release tabs carefully and pull straight out to disconnect each connector. Classic MGB headlights use simple spade connectors that pull off easily. MGF uses bullet connectors accessible from wheel arch. Label connections if needed for easier reinstallation.
3. Remove the headlight mounting bolts or retaining ring. Modern MG models like ZS and HS use 10mm bolts to secure the headlight assembly, typically 3-4 mounting bolts along the top and side edges easily accessible once the bonnet is open. MG4 has similar bolt arrangement with straightforward access. Classic MGB uses a chrome retaining ring with three screws around the headlight rim that must be loosened to allow headlight bowl to tilt forward. MGF requires removing wheel arch liner clips to access mounting bolts from inside wheel arch. Remove all mounting bolts or screws completely and keep organized for refitting.
4. Release any additional clips or retainers. Some modern MG headlights use supplementary plastic clips at various points for additional security. On ZS and HS models, check for clips at the inner corner near the grille. Work carefully as plastic clips can become brittle with age especially on older MG Rover models like ZR and ZS saloon. Classic MGB headlights simply tilt forward once retaining ring is loosened with no additional clips.
5. Carefully remove the headlight assembly. With all bolts and clips released, gently pull the modern headlight straight forward out of its mounting position. MG headlights typically slide forward on locating pins that ensure correct alignment. Support the weight as you pull to prevent dropping the assembly. On classic MGB, tilt the headlight bowl forward and lift out of the mounting ring. If you feel resistance, stop immediately and check for missed fixings rather than forcing removal which could crack the housing or damage mounting points.
6. Transfer components to new headlight if needed. If your replacement doesn't include bulbs or control modules for LED systems, carefully transfer these from the old unit. When handling bulbs, wear clean gloves to avoid touching glass surfaces with bare hands as skin oils cause premature failure and hot spots reducing bulb life. Check bulb condition and replace if worn or discoloured. For classic MGB, transfer the chrome retaining ring and adjustment screws to new headlight bowl if not included.
7. Install the new headlight assembly. Reverse the removal process by aligning the new headlight with mounting pins and push firmly into place ensuring all locating pins engage correctly in their housings. On classic MGB, position headlight bowl in mounting ring and secure with retaining ring screws. Refit all mounting bolts and tighten securely but avoid overtightening plastic mounting points on modern models. Reconnect all electrical connections ensuring each clicks firmly into place. Test all lighting functions before final assembly including dipped beam, main beam, side lights, and indicators to confirm proper operation and correct polarity on classic models.

Important Notes: MG headlight replacement is straightforward on most models with good access except MGF which requires wheel arch liner removal. When handling new headlights, never touch lens or reflector surfaces as fingerprints affect light output and reduce visibility. LED headlights may require coding to the ECU to avoid warning lights on some modern models. Check headlight alignment after fitting using adjustment screws on the rear of the assembly for optimal visibility and MOT compliance. Classic MGB headlights require careful alignment of the beam pattern using the three adjustment screws around the headlight rim.

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How to Replace MG Front Bumper

Replacing an MG front bumper is achievable in 45-90 minutes depending on model. This process covers modern MG ZS, HS, MG4, and MG3 models, though specific screw locations vary between generations. Classic MGB and MGF have simpler chrome bumper or plastic bumper arrangements respectively.

Step-by-Step Instructions:

1. Open the bonnet and secure it with the prop rod. Locate the upper bumper mounting fixings along the top edge just below the grille area. Most modern MG models have 4-8 screws or bolts securing the bumper along the top. On ZS and HS models, these are typically Phillips screws or 10mm bolts easily visible once bonnet is open. MG4 electric models have similar fixings with clear access. MG3 has straightforward Phillips screw arrangement. Remove all upper fixings systematically and keep organized. Classic MGB chrome bumpers are held by long bolts passing through the front panel from inside the engine bay requiring spanner access.
2. Access the wheel arch areas on both sides. Turn the steering wheel fully to one side to maximize access to the wheel arch liner. Behind each front wheel, locate the plastic arch liner securing clips and screws. Remove or release 3-5 plastic clips or screws securing the front section of the liner to expose side bumper mounting points. MG uses plastic push-in clips that release by pressing the center pin first before pulling the entire clip out. Repeat on both driver and passenger sides. Classic MGB chrome bumpers don't require wheel arch access as all fixings are accessible from engine bay or underneath vehicle.
3. Remove the side mounting screws from both wheel arches. Behind each wheel arch liner on modern models, you'll find 2-4 screws or bolts securing each side of the bumper to the wing. These are usually 10mm bolts or Phillips screws on MG models. Remove all side fixings on both driver and passenger sides completely. Keep track of which fixings came from which side as they may differ between left and right. MG4 has similar arrangement though access is slightly tighter due to electric motor packaging.
4. Remove undertray screws and lower bumper fixings. Get underneath the vehicle safely using ramps or jack stands never work under a vehicle supported only by a jack. Locate and remove all screws and clips securing any engine undertray and the lower edge of the bumper. MG typically uses 6-12 fixings along the bottom edge. These may be Phillips screws, 10mm bolts, or plastic push-in clips depending on model year. You don't always need to remove the entire undertray just the front section for bumper access. Classic MGB chrome bumpers have mounting bolts underneath accessible with spanners.
5. Disconnect fog lights, sensors, and electrical connections. Reach behind the bumper and disconnect all electrical connectors including fog lights if fitted typically one connector per side, parking sensor connections if equipped with parking assist usually 4 sensors across the bumper, and any additional connections for cameras on newer models or washer jets. Press release tabs carefully and pull straight out. Count connections as you disconnect to ensure you reconnect them all during refitting. Classic MGB chrome bumpers have no electrical connections unless aftermarket fog lights fitted.
6. Release the bumper side clips and mounting tabs. Modern MG bumpers are secured by plastic clips or metal brackets on each side that slot into the wing panels. With all visible fixings removed, firmly but gently pull the bumper forward from one corner while supporting the opposite side. You may need to wiggle slightly side-to-side to release the clips from their mounting points. Listen for clicks as clips disengage from wings. Classic MGB chrome bumpers lift away once all mounting bolts removed with over-riders separate components.
7. Remove the bumper completely from the vehicle. With all fixings removed and clips released, carefully pull the bumper straight forward away from the vehicle supporting it evenly. Modern MG bumpers are reasonably lightweight on MG3 models but ZS, HS, and MG4 bumpers are heavier and benefit from a second person due to size and weight. Place the removed bumper on a protected surface like cardboard or blankets to avoid scratching the painted surface. Classic MGB chrome bumpers are heavy steel construction requiring careful handling.
8. Prepare and fit the replacement bumper assembly. Before installation, transfer any brackets, trim pieces, number plate mounting, fog light surrounds, or components from the old bumper if not fitted to your replacement part. Align the new bumper with mounting points and push firmly into place ensuring all side clips engage properly into the wing mounting points. Reconnect all electrical connections including fog lights and parking sensors ensuring each clicks firmly. Systematically secure with all screws, bolts, and clips in reverse order of removal. Test all electrical functions before final assembly including fog lights and parking sensors. Check panel gaps are even on both sides and adjust if needed before final tightening.

Top Tips: Modern MG bumpers are designed for practical replacement with straightforward access. When refitting parking sensors, ensure each clicks firmly into its mounting hole and is correctly aligned flush with the bumper surface for proper operation. On models with front-mounted cameras for parking assist systems, these may require recalibration at an MG specialist after bumper replacement. Check all panel gaps between bumper and wings are even before final tightening of all fixings. Classic MGB chrome bumpers should be checked for corrosion before refitting and treated if necessary to prevent rust spreading.

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Common MG Parts Problems & Solutions

MG vehicles offer exceptional value for money with generous equipment levels and competitive pricing undercutting established rivals like Kia, Hyundai, and Toyota. However, reliability has been a significant concern. In the 2024 What Car? Reliability Survey, MG ranked last finishing 31st out of 31 manufacturers, below even Alfa Romeo and Land Rover. The MG4 itself was found to be the least dependable electric car in the survey with just 63.8% reliability score. Fortunately, all MG vehicles benefit from an industry-leading seven-year or 80,000-mile warranty providing essential coverage. Here are the most commonly reported MG parts problems based on verified data from UK owners, mechanics, and What Car? surveys.

Infotainment System Problems (All Modern Models) - Most Common Issue:

• Widespread System Failures: Infotainment system problems are one of the most reported MG issues especially in models like the ZS and HS. What Car? rated MG infotainment systems in last place across all manufacturers demonstrating the severity of these problems. Common faults include freezing screens where the touchscreen becomes completely unresponsive requiring restart, unresponsive touch controls where inputs are ignored or delayed significantly, random system restarts where the screen goes blank and reboots itself without warning, and extremely sluggish performance making navigation and entertainment functions frustratingly slow to use.
• Connectivity Issues: Apple CarPlay and Android Auto connectivity problems are frequently reported with phones failing to connect properly, connections dropping randomly during driving, and audio cutting out intermittently. The system sometimes sees the main screen when changing to reversing camera creating dangerous blind spots. When phones are connected and using CarPlay the infotainment system often becomes even more unstable with increased freezing and crashes.
• Impact on Usability: These infotainment problems significantly affect daily usability as many vehicle functions are controlled through the touchscreen including climate control, navigation, vehicle settings, and entertainment. Owners report having to restart the system multiple times during journeys to restore functionality. The poor infotainment performance has become so notorious that it regularly appears as the primary complaint in owner reviews and forums.
• Solutions: MG has been rolling out software updates to address infotainment issues though many owners report updates provide only temporary improvement before problems return. Hard reset by holding the home button for 10 seconds can temporarily restore functionality. In severe cases, infotainment control module replacement may be necessary under warranty. When buying used MG vehicles, thoroughly test all infotainment functions during test drive including screen responsiveness, CarPlay connectivity, and navigation as these systems have proven highly problematic.

Electrical System Malfunctions (ZS, HS, MG4):

• Dashboard Warning Lights: Random dashboard warning lights are one of the more annoying MG common faults appearing without clear reason. These include check engine light, ABS warning light, airbag warning light, and various system fault messages. In many cases these lights appear due to minor sensor issues or software glitches and may clear after restart or reset. However they often lead to unnecessary trips to dealerships for diagnostics and cause owner frustration and concern about vehicle safety.
• Power Window and Door Lock Failures: Some owners have reported intermittent failures of power windows and door locks where components become unresponsive or operate erratically. The driver's one-touch electric window going down instead of up has been acknowledged by MG and repaired by dealers. These electrical gremlins undermine confidence in vehicle quality and reliability.
• Sensor Malfunctions: Problems with various sensors are common affecting vehicle functionality. Sensor issues trigger erroneous warning lights even when no actual fault exists. Electrical wiring faults from wear and tear or manufacturing defects can lead to short circuits, loose connections, flickering lights, dimming interior illumination, or complete loss of power to certain vehicle systems.
• Solutions: Have vehicle inspected by qualified technician with expertise in automotive electrical diagnostics using specialized diagnostic equipment to identify root cause. Many electrical issues are covered under MG's comprehensive seven-year warranty. Software updates from MG may resolve sensor and warning light issues. Check all electrical connections for corrosion or looseness and repair as needed.

Build Quality and Interior Issues (All Models):

• Interior Trim Rattles and Squeaks: Inconsistent interior quality is frequently pointed out by MG owners. You may notice rattles, loose trim, or squeaks developing after only a few thousand miles. These cosmetic problems don't always affect drivability but are among the more frequent MG common faults raised by new owners. In colder or hotter climates, expansion and contraction of plastic parts leads to dashboard or door panel noise further reducing perceived quality. What Car? surveys found 9% of MG4 owners reported interior trim faults making it the second most common issue.
• Loose and Poor-Quality Materials: Dashboard components, door cards, and center console trim pieces can become loose or develop rattles relatively quickly. The use of lower-cost materials and suppliers to keep prices competitive means MG interiors don't have the solid feel or durability of more established brands. Trim pieces may not fit perfectly with visible gaps or misalignment from factory.
• Solutions: Identify source of rattles and squeaks by pressing on various trim pieces while driving. Apply felt tape or foam padding behind loose trim to eliminate noise. Tighten any loose fasteners carefully. In some cases trim pieces may need replacement under warranty if faults developed early. Regular inspection and maintenance of interior components helps prevent minor issues becoming major annoyances.

Engine Problems (Petrol Models - ZS, HS, MG3):

• Engine Stalling Issues: The 1.5-litre DVVT engine fitted to ZS and other models has experienced stalling problems especially when cold. Engines run roughly or lumpily when cold making driving challenging until engine reaches operating temperature. MG acknowledged this issue and dealers have performed repairs including replacing water temperature sensors. Some owners report problems persist even after dealer intervention requiring multiple repair attempts.
• Head Gasket Failures: There have been reports of premature head gasket failures on MG ZS particularly the 1.0-litre turbo engine. One owner reported head gasket failure after just 15 months requiring new cylinder head replacement. Blown head gaskets cause coolant loss and overheating putting greater strain on engine and potentially causing catastrophic damage. Average repair cost is approximately £862 though should be covered under warranty if failure occurs within seven years.
• Loss of Engine Power: Owners experience loss of engine power which can occur due to clogged air filters restricting airflow, faulty fuel injectors leading to poor combustion, ignition system problems such as faulty spark plugs or coils causing misfires, or carbon buildup on intake valves and combustion chambers. Regular maintenance including air filter replacement and use of quality fuel helps prevent these issues.
• Oil Consumption: Some models particularly higher mileage examples experience excessive oil consumption requiring regular monitoring and top-ups between service intervals. This is often related to worn piston rings or valve seals and can lead to reduced performance if not addressed.

EV-Specific Problems (MG4, ZS EV, MG5 EV):

• Charging System Issues: With MG focusing heavily on electric vehicles, new EV owners report emerging problems in this category. Fast charging compatibility issues are common with vehicles sometimes refusing to charge at public rapid chargers requiring recovery. The car's software appears to brick during pre-charge checks with no way to clear fault codes without garage intervention. What Car? surveys found 4% of MG4 owners experienced battery or charging system faults.
• Rapid Range Loss in Cold Weather: EV range drops significantly in cold weather which while common to all EVs seems particularly pronounced on MG models. Owners report range dropping from 180+ miles down to just 130 miles on cold days around 2°C or less. At temperatures around 10-18°C range already drops below 150 miles. This is partly physics affecting all EVs but appears more severe on MG models potentially due to less sophisticated thermal management systems.
• Software Bugs and Glitches: EV-specific software issues include navigation systems freezing on current position and not tracking car movement (caused by Dead Reckoning setting), charging systems not communicating properly with vehicle computers, and battery management systems providing inaccurate range estimates. MG is rolling out software updates regularly but some owners still experience inconvenience especially during long-distance trips.
• Heating System Issues: Little heat in cabin unless on front window demist setting is very annoying especially in winter months. This follows on to design fault with mirrors misting very easily requiring constant use of demist function. Owners consider this very dangerous as it prevents seeing if anything is overtaking on high-speed roads. There's also a very quiet ticking noise from heater control module which is the PWM control signal switching rapidly.

Suspension and Steering Problems:

• Front Suspension Wear: Front suspension on ZS is prone to premature wear resulting in drivers noticing noises particularly when driving over bumps. Worn suspension components affect handling stability and ride comfort. Regular inspection of struts, springs, bushings, and other suspension components helps identify wear before it becomes severe.
• Steering Issues: Loud clunking noises when turning steering to full lock have been reported. Some owners experience steering pulling to one side indicating alignment issues or worn suspension components. These problems affect vehicle control and safety requiring prompt attention.

Transmission and Clutch Issues (Manual Models):

• Jerky Clutch Operation: The clutch in manual ZS models is very jerky making smooth gear changes difficult. Sometimes dealers attempt to resolve this though success varies. Premature clutch failure has been reported with some vehicles needing clutch replacement after just four months. MG initially tried to blame driving style but independent engineers reports identified cars as having issues from manufacture.
• Gearbox Whining Noises: Loud harmonic whining noises in gearbox when either reversing or moving off in first gear have been reported. MG acknowledged this as a characteristic of the car rather than a fault though owners find the noise annoying and concerning about potential transmission damage.

Rust Issues (White Models):

• Paint and Corrosion Problems: Rust issues on white MG ZS models have been reported with no resolution from MG. While not widespread, corrosion on relatively new vehicles is concerning. Regular washing and treatment of any rust spots early helps prevent spread. Check paintwork carefully especially on white vehicles for any signs of bubbling or rust developing underneath.

MG Reliability Assessment:

Poor Overall Reliability But Excellent Warranty Coverage: MG's reliability is unfortunately the worst among all manufacturers tested. In the 2024 What Car? Reliability Survey, MG ranked dead last finishing 31st out of 31 manufacturers below even brands traditionally considered unreliable like Alfa Romeo and Land Rover. The MG4 specifically was found to be the least dependable electric car in the survey with just 63.8% reliability score finishing last out of 18 electric cars. Common MG4 faults included 15% non-motor electrical problems, 9% interior trim issues, 7% bodywork problems, and 7% motor issues. The MG ZS EV performed better with 93.5% reliability score ranking 5th out of 9 electric SUVs though 25% still had problems mostly related to engine and electrical systems.

Seven-Year Warranty Essential: The saving grace is MG's industry-leading seven-year or 80,000-mile warranty which is among the best coverage available matching Kia and exceeding most competitors who offer just three years. This comprehensive warranty provides essential protection given the high likelihood of needing repairs. MG paid for all repairs on vehicles that went wrong in What Car? surveys. Most cars could still be driven and were repaired in less than a week demonstrating responsive dealer support even if underlying reliability remains problematic.

Value Proposition with Realistic Expectations: MG vehicles offer outstanding value for money with generous equipment levels, spacious cabins, and competitive pricing often undercutting established rivals significantly. The MG HS won What Car? 2025 awards for Plug-in Hybrid of the Year and Best Family SUV for Value. Safety is excellent with Euro NCAP five-star ratings for HS and ZS models with 90% adult and 85% child protection. However buyers must go in with realistic expectations about reliability. With proper research, thorough pre-delivery inspection, regular maintenance, and acceptance that warranty claims will likely be necessary, an MG can still be a practical choice for budget-conscious buyers prioritizing value over proven reliability.

Prevention and Maintenance: To minimize MG reliability issues, thoroughly test infotainment system during purchase including all touchscreen functions and CarPlay connectivity, inspect interior trim for rattles and loose components, verify all electrical systems operate correctly without warning lights, test drive both when cold and at operating temperature to check for stalling or rough running, check service history and ensure warranty is transferable, and budget for potential repairs even with warranty as inconvenience and downtime still occur. When issues develop, document everything, contact dealer promptly, and insist on permanent fixes rather than temporary patches. The seven-year warranty provides essential protection so ensure all faults are addressed under coverage before it expires.

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