The engine shows below-average reliability with a risk score of 7.0 out of 10. While performance is strong, fuel system components introduce higher risk and ownership costs. A well-documented service history is essential.
BMW N54
N54 Engine
The N54 is a petrol engine manufactured by BMW. It has a displacement of 3.0 liters and was produced from 2006 to 2016.
Typical Use Cases
- BMW 1 Series (E82 135i): 2007–2013
- BMW 3 Series (E90 335i): 2006–2011
- BMW 5 Series (E60 535i): 2007–2010
- BMW Z4 (E89 35i): 2009–2016
- BMW 7 Series (F01 740i): 2008–2012
This overview summarizes the reliability of the BMW N54, including common issues and cost drivers.
Technical Specifications
Manufacturer
BMW
Fuel Type
Petrol
Displacement
3.0 L
Production
2006–2016
Power Output
306 hp
Emissions
Euro 4, Euro 5
Reliability Analysis
Caution
Autoscore Verdict
Caution. The risk score of 7.0 reflects a higher likelihood of fuel system problems.
Risk Score
7
out of 10
Common Problems & Weak Points
| Issue | Typical Mileage | Repair Cost (Est.) | Severity |
|---|---|---|---|
| High Pressure Fuel Pump Failure | ~80,000 km | €900 – €1600 | High |
High Pressure Fuel Pump Failure
The N54's direct injection system is known for high pressure fuel pump failures. When the pump weakens, the engine can crank for a long time, misfire, or enter limp mode. This is a high-probability issue typically appearing around 80,000 km. Repairs often cost between 900 and 1,600 EUR.
Typical Mileage: 80,000 km
Cost: €900–1600
Buyer's Inspection Checklist
- Confirm the high pressure fuel pump has been replaced with a newer revision.
- Check for long crank times, misfires, or fuel system fault codes.
- Inspect for aftermarket tuning, which can increase fuel system stress.
- Review service records for injector replacements and regular oil changes.
Frequently Asked Questions
Is the N54 engine reliable?
The N54 has known weak points, but with good maintenance the reliability is solid. See the risk analysis and common problems for specifics. Start a report for a specific car.
How expensive are typical repairs?
Common repairs fall into a mid-range cost band depending on the issue and workshop. Check the cost ranges in the table. Use the used car report for specific listings.
Which model years are best for this engine?
Newer production years often include technical updates. Review the production years and revisions in the specs. Use Car Check for quick screening.