1.0 T-GDI timing chain tensioner wear
SeriousEngineThe timing chain tensioner and guide rails on the 1.0 T-GDI three-cylinder turbo can wear prematurely, causing a distinctive rattle on cold start as hydraulic pressure leaks overnight. If ignored the chain can stretch enough to skip a tooth, risking catastrophic valve-piston contact.
Most affected: 1.0 T-GDi
Estimated cost: £600–£1,200Affects: 2020–2024Often appears around: 40,000–70,000 miles
Typical symptoms
- •Rattle from the engine for the first few seconds after cold start
- •Engine warning light for timing correlation
- •Rough idling or hesitation
What to inspect before you buy
- ✓Listen to the engine from cold before viewing
- ✓Verify strict 10,000-mile or annual oil change history
- ✓Check for updated tensioner part number on replacement jobs