BMW 320d
Reliability
BMW 320d reliability: 72–78/100. Engines are robust with 200,000+ mile potential if serviced regularly. Main issues: DPF (Diesel Particulate Filter) regeneration faults, automatic transmission software glitches, water pump failures around 80,000 miles.
Running Costs
Average annual cost: £6,500–8,000. Diesel efficiency: 45–55mpg (excellent). Insurance: £500–800/year (higher group 22–26). Road tax: £130–150/year. Servicing: BMW dealers charge £250–500 per service; independent specialists: £150–300.
MOT Reliability
MOT pass rate: 65–70% (slightly below average). Most common failures: emissions (20% due to DPF issues), brake wear (18%), suspension (12%). Older models (F30 pre-2015) have lower pass rates than newer F30 facelifts.
Common Problems
DPF regeneration faults (clogging, malfunction lights), automatic transmission delays or juddering, water pump failure (80,000–100,000 miles), coolant leaks, plastic water pump impeller degradation, suspension knocking over bumps.
Insurance
Insurance groups 22–26. Premium for 25–35 year olds: £600–1,000/year. Mature drivers (40+): £400–650/year. High repair costs and specialist parts increase premiums vs Japanese rivals.
Road Tax (VED)
Road tax: £130–150/year depending on registration date. Pre-2017: flat rate £140–160. Post-2017: varies by CO2 (typically £130–150). Diesel engines pay same as petrol equivalents.
Maintenance & Servicing
BMW dealer service: £250–500 every 12,000 miles or 2 years. Independent specialist: £150–300. DPF cleaning (necessary every 50,000–80,000 miles): £150–300. Brake fluid: every 2 years (£100–150).
Mileage & Lifespan
Typical mileage: 10,000–15,000 miles/year. Well-maintained examples reach 150,000+ miles. Engines typically good for 200,000+ miles. High-mileage units (150,000+) may need DPF cleaning and cooling system work.
Frequently Asked Questions
How reliable is the BMW 320d engine?
The 2.0L diesel is very reliable with proper servicing. Engines regularly exceed 200,000 miles. The main risk is the DPF system failing around 80,000 miles, costing £300–500 to fix.
Is diesel worth it on a 320d?
Yes, if you do 12,000+ miles/year. Diesel gets 45–55mpg vs 35–40mpg on petrol. You'll save £800–1,200/year on fuel, offsetting the higher servicing costs and insurance premiums.
What should I look for when buying a used 320d?
Check for DPF regeneration warning lights, suspension clunks, and water pump condition. Avoid high-mileage (150,000+) examples without documented DPF cleaning. Service history is critical—choose main dealer serviced examples.
Will a 320d pass its MOT?
70% of 320d models pass MOT first time. Emissions testing is strict due to DPF—ensure the DPF is clean before the test. Well-maintained examples achieve 80%+ pass rates.
Own a BMW 320d?
Get instant MOT history, mileage data, and AI-powered ownership insights.
Check My BMW 320d →