Subaru Impreza: timing belt or chain?
| Engine family | Cam drive | |
|---|---|---|
| Earlier Imprezas, including the third generation sold here from September 2007 | EJ | Rubber timing belt |
| 2012 to 2016 | FB20B | Timing chain |
| 2017 onward | FB20D | Timing chain |
Why the belt matters so much on an EJ
A timing belt (a toothed rubber belt) keeps the camshafts in step with the crankshaft. On the EJ, DOHC engines and SOHC engines from 1998 on are interference designs: if the belt fails, the valves will likely be damaged. A belt that would have been a planned job becomes an engine repair.
SOHC EJs up to 1995 were built so a broken belt wouldn't damage them. That's no reason to leave one late, because the car still stops wherever it happens.
When is it due?
The service book for your car sets the kilometres and years. If you can't find a receipt or a sticker for the last belt change on an EJ Impreza, treat it as due.
If your Impreza has an FB engine, there's no belt on the schedule. The FB's chain runs in engine oil, which is why it holds about a litre more oil than the old belt engines. Keep those oil changes on time.
What a good timing belt estimate covers
- The belt itself, and the tensioner and idler pulleys it runs on.
- Whether the water pump is being replaced while it's apart, and why.
- Any oil seals that are leaking onto the belt area.
- The drive belts for the accessories, if they're worn.
- A sticker under the bonnet with the date and kilometres when it's done.
Impreza maintenance beyond the belt
Subaru's handbook puts Model Year 2021 onwards Imprezas on 12,500 km or 12 months. From Model Year 2024 it's 12 months or 15,000 km, whichever comes first.
Every Impreza sold here from 2009 to 2016 was in a 2019 recall for brake light switches, because contamination could stop the brake lights working. If yours is from those years, a VIN check takes a minute.
Tell us it's an Impreza, the year and the engine if you know it. A local mechanic who specialises in your car.
Where we'd start with an Impreza
Find out which engine it has first: the mechanic can tell you in minutes from the engine code. If it's an EJ with no belt record, get a written estimate that names the belt, tensioner and pulleys, and get it done before a long trip. If it's an FB, spend that money on fresh oil instead.
