Timing belt replacement
The timing belt keeps crankshaft and camshaft in step. If it breaks, on most engines the valves meet the pistons and the engine is destroyed — over a part that is replaced on schedule and whose replacement costs a fraction of the damage. The interval is set per engine by the manufacturer, in kilometres and in years; the year limit applies even at low mileage, because the belt goes brittle with time.
What it covers
- Belt, tensioner and idler pulleys as a kit — replacing one alone makes no sense
- Replacing the water pump as well, where it is belt-driven
- Checking the crankshaft seal while it is accessible
- Verifying valve timing after assembly
When it is due
- The service schedule's interval is reached, by mileage or by years
- The change is undocumented and the car is older — then replace it, in doubt
- Squealing from the belt drive on a cold start
- Oil traces on the belt cover: leaking seals attack the belt
Worth knowing
When buying used, the timing belt is the single most important invoice that should be in the folder. If it is missing and the car is within interval range, price the change in — not as a negotiating tactic but because you genuinely have to have it done before driving any distance. Whether an engine has a belt at all, or a chain, any specialist can tell you from the engine code.
Find a workshopOther services
- Servicing and inspection
- Oil change
- Brake service
- Tyres and wheels
- Air conditioning service
- Timing chain
- Clutch
- Transmission service
- Fault diagnosis
- Electric and hybrid service
- Battery and starter
- Exhaust and emissions system
- Wheel alignment
- Bodywork and accident damage
- Paintwork
- Glass and windscreens
- Periodic roadworthiness test