BMW 5 Series F10 — Reliability
Reliability Summary
Best engine
N63TU (N63B44O1/O2/T3) — 62/100
CAUTION
Worst engine
N63 (N63B44O0) — 43/100
AVOID
Average reliability
52/100
Engine Comparison
| Engine | Reliability Score | Verdict |
|---|---|---|
|
N63TU (N63B44O1/O2/T3)
N63TU 4.4 V8 Twin-Turbo (2012-) |
62/100 | CAUTION |
|
N63 (N63B44O0)
N63 4.4 V8 Twin-Turbo (2008-2014) |
43/100 | AVOID |
Engines in this model
CAUTION
62
N63TU (N63B44O1/O2/T3)
N63TU 4.4 V8 Twin-Turbo (2012-)
The updated hot-V V8 (from 2012-2013) with Valvetronic, forged internals, new valve stem seals and a...
View details →
AVOID
43
N63 (N63B44O0)
N63 4.4 V8 Twin-Turbo (2008-2014)
The original twin-turbo hot-V V8 (2008-2014: 550i F10, 750i F01, 650i F12/F13 to 2012, X5 50i E70, X...
View details →Known Issues Across All Engines
| Issue | Engine | Severity |
|---|---|---|
| Timing chain and tensioner wear | N63TU (N63B44O1/O2/T3) | high |
| Oil consumption - valve stem seals (US class-action settlement) | N63TU (N63B44O1/O2/T3) | high |
| Injector failure | N63TU (N63B44O1/O2/T3) | moderate |
| Brake vacuum pump leak | N63TU (N63B44O1/O2/T3) | moderate |
| Coolant leaks | N63TU (N63B44O1/O2/T3) | minor |
| Timing chain stretch and guide-rail breakage | N63 (N63B44O0) | critical |
| Piezo injector failure (Customer Care Package item) | N63 (N63B44O0) | high |
| Excessive oil consumption - valve stem seals (US class-action settlements) | N63 (N63B44O0) | high |
| Auxiliary electric water pump overheating - fire risk (recall) | N63 (N63B44O0) | moderate |
| Brake vacuum pump leak | N63 (N63B44O0) | moderate |
| Coolant leaks | N63 (N63B44O0) | minor |
| Battery drain and premature battery failure | N63 (N63B44O0) | minor |
FAQ
Is the BMW 5 Series reliable?
The BMW 5 Series has 2 engine options with reliability scores ranging from 43/100 (AVOID) to 62/100 (CAUTION). Average reliability: 52/100.
Which BMW 5 Series engine is most reliable?
The N63TU (N63B44O1/O2/T3) is the most reliable engine in the BMW 5 Series, scoring 62/100 (CAUTION).
What problems does the BMW 5 Series have?
Across all engine variants, the BMW 5 Series has 12 known issues. The most common are related to Timing chain and tensioner wear, Oil consumption - valve stem seals (US class-action settlement), Injector failure.