116i / 118i / 120i (N43, 2007–2011)
2007–2011 · petrol · 1995cc · 170hp
Engine codes: N43
Reliability, common problems and owner reviews for the Bmw 1 Series E87 116i / 118i / 120i (N43, 2007–2011). Check this before you buy used.
The direct-injection N43 — poorly regarded: it develops timing-chain issues AND the DI fuelling troubles (injectors, coils, sensors, lean-running faults) common to this BMW family. Interference design means chain failure is catastrophic. If you want an E87 petrol, the straight-six N52 (130i) is far better.
Same engine, other cars
This is the same physical engine (N43) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
N43 chain/guides/tensioner poorly designed; interference engine → catastrophic if timing slips. Rattle / oil-pressure light warns.
Fix / Workaround: Replace chain + guides; act on rattle/oil light.
Repair cost: €700–€1600
Typically appears after: 100,000 km
DI injectors, coils and lambda/NOx sensors cause lean-running/misfire faults.
Fix / Workaround: Replace as needed (can recur).
Repair cost: €150–€1000
Mileage Thresholds
After 100,000 km: Chain + fuelling faults cluster.
Pre-Purchase Checklist
- ☐Cold-start rattle / oil-light check
- ☐Scan for lean/misfire codes
- ☐Prefer the N52 six (130i)
Frequently asked questions
Is the Bmw 1 Series E87 116i / 118i / 120i (N43, 2007–2011) reliable?
Problematic — The direct-injection N43 — poorly regarded: it develops timing-chain issues AND the DI fuelling troubles (injectors, coils, sensors, lean-running faults) common to this BMW family. Interference design means chain failure is catastrophic. If you want an E87 petrol, the straight-six N52 (130i) is far better.
What are the common problems and reviews for the Bmw 1 Series E87 116i / 118i / 120i (N43, 2007–2011)?
The most commonly reported problems: Timing chain wear, Injector / coil / sensor faults.
Is a used Bmw 1 Series E87 116i / 118i / 120i (N43, 2007–2011) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.