EngineHigh
DPF and EGR faults on the 1.7 CRDi
- Typically appears
- 90,000+ miles
- What to inspect
- Check for regen warnings and run it hot
- Typical repair
- DPF forced regen or replacement · £250–£1,600
Is the 2011–2019 Hyundai i40 reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
4.3/ 10
Buy with cautionOn our documented-fault scoring the Hyundai i40 rates 4.3 out of 10 · buy with caution. We hold 8 known faults for it and 3 are rated high severity, so the risk is real but contained. The weak points cluster around engine, suspension and electrical. 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 · Walk unless the history is spotless
What the score is built from
- Critical
- 0
- High
- 3
- Medium
- 4
- Low
- 1
Weak points cluster around engine, suspension, electrical, brakes.
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Check this carThe faults that decide it
TransmissionHigh
Clutch judder when pulling away in first gear or a rattling noise at idle, indicating dual-mass flywheel (DMF) wear on manual 1.7 CRDi models.
- Typically appears
- 70,000-100,000 miles
- What to inspect
- Start the engine from cold. Listen for a metallic rattle that disappears when the clutch pedal is depressed. Test a pull-away in first gear to feel for driveline judder.
- Typical repair
- Clutch & dual-mass flywheel · £700–£1,600
EngineHigh
Rhythmic ticking or metallic rattling from the engine bay on cold start due to timing chain stretch and tensioner wear on the 1.7 CRDi.
- Typically appears
- 80,000-120,000 miles
- What to inspect
- Ensure the engine is completely cold. Start the car with the bonnet open and listen closely to the timing chain cover area on the left side of the engine for a harsh metallic rattle.
- Typical repair
- Timing chain, tensioner & guides · £900–£2,400
SuspensionMedium
Front bush and drop link wear
- Typically appears
- 70,000+ miles
- What to inspect
- Listen for knocks over rough roads
- Typical repair
- Suspension refresh (per axle) · £250–£1,100
BrakesMedium
Rear caliper seizing on low mileage cars
- Typically appears
- Age-related
- What to inspect
- Check for uneven rear pad wear
- Typical repair
- Brakes (discs, pads, caliper) · £200–£800
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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