N20
BMW · 2.0L Turbo I4
2011–2015
"Punchy turbo four. One known flaw (timing chain class-action 2012-15). After fix: 200k+ km."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 3
Timing chain + guide + tensioner — class-action
▸Cold start rattle (first 5-10 sec), check engine light, rough running in severe cases
Defining N20 issue. Class-action 2021 (2012-2015 models). Plastic guides wear, tensioner fails, chain stretches. Can snap catastrophically.
MOST IMPORTANT pre-purchase check for any N20. Cold start rattle = chain worn. If not done: budget €1,200-2,800 and negotiate price down.
Electric water pump failure
▸Coolant warning, overheating, no cabin heat
Same electric water pump as N55. Predictable failure window.
Replace preventively at 100k km if not done. Critical in Greek summer heat.
Oil filter housing gasket leak
▸Oil drip under car, burning smell, oil on underside
Very common. Often done at same time as timing chain service.
Budget together with timing chain if both not done.
This report covers the combustion engine only. Battery and electric motor reliability are not included.
Models with N20 17
Other BMW Engines
Tuning Potential
290hp Stage 1
Frequently Asked Questions
Is the BMW N20 reliable?
The BMW N20 scores 58/100 with a verdict of CAUTION. It has 3 documented issues with total repair costs between €1,850 and €4,100.
What are the common problems with the N20?
The most common issues are:
- Timing chain + guide + tensioner — class-action — critical, repair cost €1,200–€2,800, 60,000 km–120,000 km
- Electric water pump failure — high, repair cost €400–€800, 80,000 km–140,000 km
- Oil filter housing gasket leak — moderate, repair cost €250–€500, 60,000 km–120,000 km
What cars use the BMW N20?
How much does it cost to repair the N20?
Total potential repair costs for all 3 known issues range from €1,850 to €4,100. The most expensive issue is typically .
What years was the N20 produced?
The BMW N20 was produced from 2011 to 2015. It is a 1997cc I4 petrol turbo engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.