EngineMedium
Oil consumption and rough running on the 1.5 petrol
- Typically appears
- 60,000+ miles
- What to inspect
- Check the oil level and idle quality
2013–2024 MG 3 · common problems & known faults
A budget supermini with a long warranty, popular as a first car and second household vehicle.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2013–2024 MG 3 are Metallic rattle on cold start and EML illumination due to timing chain stretch, Oil consumption and rough running on the 1.5 petrol and Clutch wear on ex-learner cars. 1 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the MG 3.
5.4/ 10
- Critical
- 0
- High
- 1
- Medium
- 6
- Low
- 1
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
TransmissionMedium
Clutch wear on ex-learner cars
- Typically appears
- 50,000+ miles
- What to inspect
- Test the bite point on an incline
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Build the inspection planBodyMedium
Paint and trim durability on earlier cars
- Typically appears
- Age-related
- What to inspect
- Inspect the paint finish in daylight
SuspensionMedium
Knocks and rattles from bushes and links
- Typically appears
- 60,000+ miles
- What to inspect
- Drive over rough surfaces and listen
Engine/TimingHigh
Metallic rattle on cold start and EML illumination due to timing chain stretch.
- Typically appears
- 50,000-70,000 miles
- What to inspect
- Start the engine from dead cold with the bonnet open. Listen closely to the timing cover side for a distinct metallic rattle lasting 3-5 seconds.
SteeringMedium
Heavy steering feel, whining noise from the PAS pump, and hydraulic fluid leaks.
- Typically appears
- 40,000-60,000 miles
- What to inspect
- Check the PAS fluid reservoir level, then turn the steering wheel lock-to-lock while stationary with the engine running, listening for excessive groaning or whining.
ElectricalLow
Infotainment screen freezing, random rebooting, or reversing camera displaying a blank screen.
- Typically appears
- 3-5 years
- What to inspect
- Engage reverse gear to verify the camera feed appears instantly. Tap through the touchscreen menus and plug in a smartphone to test Apple CarPlay stability.
Body/InteriorMedium
Damp boot carpet and musty interior smell caused by water ingress through rear light cluster seals.
- Typically appears
- 4-7 years
- What to inspect
- Lift the boot floor carpet and inspect the spare wheel well for standing water, dampness, or rust stains around the seams.
Inspecting a MG 3?
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Build my inspection planFrequently asked questions
Who buys an MG3?
New drivers and budget buyers who want warranty cover on a cheap car.
What sells it fastest?
Low insurance group, remaining warranty and a tidy presentation.
Where do dealers lose money?
Paint and trim work. Inspect the body carefully before you commit to a retail price.
Are replacement parts readily available for forecourt preparation?
While routine service items like filters and brake pads are easily sourced through standard UK motor factors, specific body panels, interior trim, and electronic modules often require ordering directly from MG. This can lead to longer lead times, occasionally delaying forecourt prep for accident-damaged or heavily worn examples.
What are the mechanical differences between pre-facelift and post-facelift engines?
The 1.5-litre VTi-TECH engine remained largely the same mechanically throughout the production run, but the 2018 facelift introduced revised mapping to meet stricter Euro 6d-TEMP emissions standards. This slightly reduced power from 106bhp to 105bhp and altered the torque curve, though real-world driving feel remains virtually identical.
Does the 1.5 VTi-TECH engine require timing belt replacements?
The MG3 uses a timing chain rather than a belt, which is theoretically designed to last the life of the vehicle. However, it is highly sensitive to oil degradation. Dealers must verify a strict annual or 15,000-mile service history, as neglected oil changes rapidly accelerate chain stretch and tensioner failure.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
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