What reliability score does the MG 3 get?

5.4 out of 10, scored from the 8 faults we document for this model and how severe each one is.

Is the 2013–2024 MG 3 reliable?

Scored from 8 documented faults · reviewed by the VehicleFaults Research Team

Quick answer

5.4/ 10

Mixed

On our documented-fault scoring the MG 3 rates 5.4 out of 10 · mixed. We hold 8 known faults for it and 1 are rated high severity, so the risk is real but contained. The weak points cluster around engine, transmission and body. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.

Verdict · Negotiate · budget for the known faults

What the score is built from

Critical: 0
High: 1
Medium: 6
Low: 1

Weak points cluster around engine, transmission, body, suspension.

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The faults that decide it

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.
Typical repair: Timing chain, tensioner & guides · £900–£2,400

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
Typical repair: Oil leak trace & seal / gasket · £180–£700

TransmissionMedium

Clutch wear on ex-learner cars

Typically appears: 50,000+ miles
What to inspect: Test the bite point on an incline
Typical repair: Clutch & dual-mass flywheel · £700–£1,600

BodyMedium

Paint and trim durability on earlier cars

Typically appears: Age-related
What to inspect: Inspect the paint finish in daylight
Typical repair: Body & corrosion repair · £250–£1,800

SuspensionMedium

Knocks and rattles from bushes and links

Typically appears: 60,000+ miles
What to inspect: Drive over rough surfaces and listen
Typical repair: Suspension refresh (per axle) · £250–£1,100

Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.

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What the score is built from

The faults that decide it

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Reliability of other MG models