What commonly goes wrong on a used European car?
25 documented weak points across 8 brand families, 3 of them serious enough to walk away from. Each one is a specific component with a specific failure — the DQ200 dry clutch, the PureTech wet timing belt, the N47 timing chain — not a general warning to “check the engine”.
This is the same curated list the Elgarde app adds to your checklist once it knows the make and model, and the same data the free API serves. Below it is grouped by brand family, with the models each entry applies to.
What goes wrong on a Volkswagen, Audi, SEAT and Škoda?
5 documented weak points. Applies to: Volkswagen, Audi, SEAT, Škoda (Golf, Passat, Polo, Leon, Ibiza, Octavia, Fabia, A3, A1).
- DSG (DQ200 dry-clutch) — jerky/shuddering shifts, mechatronic faults
- 1.2/1.4 TSI timing chain tensioner — rattle on cold start
- TDI EGR/DPF — clogging, warning lights, short-trip use
- 1.8/2.0 TSI oil consumption (piston rings)
- Plastic water pump / thermostat leaks
Models: Volkswagen, Audi, SEAT, Škoda (Golf, Passat, Polo, Leon, Ibiza, Octavia, Fabia, A3, A1)
What goes wrong on a BMW?
4 documented weak points, one of them critical. Applies to: BMW.
- N47 diesel timing chain (rear of engine) — stretch/rattle, costlycritical
- Valve cover + oil filter housing gasket leaks
- VANOS rattle / rough idle
- E90: rust on rear wheel arches
Models: BMW
What goes wrong on a Peugeot, Citroën and DS?
3 documented weak points, one of them critical. Applies to: Peugeot, Citroën, DS.
- PureTech 1.2 wet timing belt — degrades into the oil pump (check belt/oil)critical
- 1.6 THP (EP6) timing chain + carbon build-up on valves
- 1.6 HDi turbo oil-feed / EGR / DPF issues
Models: Peugeot, Citroën, DS
What goes wrong on a Ford?
3 documented weak points, one of them critical. Applies to: Ford (Focus, Fiesta, EcoSport, Puma).
- 1.0 EcoBoost coolant/overheating (degas hose, head) — check historycritical
- 1.0 EcoBoost wet timing belt service due
- Powershift (DPS6) dual-clutch — shudder/jerk on petrol autos
Models: Ford (Focus, Fiesta, EcoSport, Puma)
What goes wrong on a Renault, Dacia and Nissan?
3 documented weak points. Applies to: Renault, Dacia; Nissan (Qashqai, Juke, Micra).
- 1.5 dCi injectors + DPF/EGR — clogging, injector wear
- Nissan Xtronic CVT — overheating/jerky (check fluid + behaviour)
- Electrical gremlins (windows, sensors, injector wiring)
Models: Renault, Dacia; Nissan (Qashqai, Juke, Micra)
What goes wrong on a Opel and Vauxhall?
2 documented weak points. Applies to: Opel, Vauxhall (Astra, Corsa, Insignia).
- 1.4 Turbo timing chain wear
- Water pump / thermostat failures
Models: Opel, Vauxhall (Astra, Corsa, Insignia)
What goes wrong on a Mercedes-Benz?
3 documented weak points. Applies to: Mercedes-Benz.
- OM651 diesel injector wear / leaks
- M271 petrol (pre-2011) balance-shaft/timing gear wear
- Older models: rust (arches, jacking points)
Models: Mercedes-Benz
What goes wrong on a Fiat?
2 documented weak points. Applies to: Fiat (500, Panda, Punto).
- 1.3 MultiJet diesel DPF (city use)
- 0.9 TwinAir oil consumption
Models: Fiat (500, Panda, Punto)
How to use this before you buy
Read the entries for the brand you are looking at, then walk the car with the full checklist — 28 items for a typical diesel, of which 8 are critical. The app adds the model's weak points to that checklist automatically once you enter the VIN or the make and model.
Where this comes from
Hand-curated for common European used models, published as open data under CC-BY-4.0 in the inspection canon, canon version 2. Corrections and additions are welcome — the list grows by being wrong in public rather than by being vague.
What this list is not
These are known weak points on a model — things worth checking — never a claim about any individual car. A model appearing here does not make it a bad car, and a model missing from the list is not endorsed: it only means nothing is curated for it yet. Elgarde is a self-service checklist, not a certified, mechanical or legal inspection. The full limits are in the inspection disclaimer.