The engine shows below-average reliability with a risk score of 7.5 out of 10. The direct-injection fuel system is the main weakness, and failures can lead to drivability issues and higher repair costs. Buyers should prioritize strong service history and updated components.
BMW N43
N43 Engine
The N43 is a petrol engine manufactured by BMW. It has a displacement of 2.0 liters and was produced from 2007 to 2011.
Typical Use Cases
- BMW 1 Series (E87): 2007–2011
- BMW 3 Series (E90/E91): 2007–2011
- BMW 5 Series (E60/E61): 2007–2010
- BMW X1 (E84): 2009–2011
This overview summarizes the reliability of the BMW N43, including common issues and cost drivers.
Technical Specifications
Manufacturer
BMW
Fuel Type
Petrol
Displacement
2.0 L
Production
2007–2011
Power Output
122 hp
Emissions
Euro 4, Euro 5
Reliability Analysis
Caution
Autoscore Verdict
Caution. The risk score of 7.5 reflects a higher likelihood of fuel system problems.
Risk Score
7.5
out of 10
Common Problems & Weak Points
| Issue | Typical Mileage | Repair Cost (Est.) | Severity |
|---|---|---|---|
| High Pressure Fuel Pump Failure | ~90,000 km | €900 – €1600 | High |
High Pressure Fuel Pump Failure
The N43 uses direct injection and is prone to high pressure fuel pump and injector failures. When these components fail, the engine can misfire, run roughly, and enter limp mode. This is a high-probability issue that often appears around 90,000 km. Repairs typically cost between 900 and 1,600 EUR depending on parts replaced.
Typical Mileage: 90,000 km
Cost: €900–1600
Buyer's Inspection Checklist
- Ask whether the high pressure fuel pump or injectors have been replaced.
- Check for misfires, rough idle, or hesitation during acceleration.
- Review diagnostic history for fuel system or misfire fault codes.
- Verify that the engine starts quickly when cold, as long cranking can indicate fuel pressure issues.
Frequently Asked Questions
Is the N43 engine reliable?
The N43 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.