EGR cooler recall
usually 40,000–160,000 km · Medium risk
model years 2014–2018 only
Signs: Coolant leak into the EGR
Fix: Check recall status (free)
free / recall
Engine: common problems, timing drive and oil
1.5d 3-cyl (BMW / MINI B37)
Diesel · 1,496 cm³ · 70–85 kW
9
model generations
1
known faults
459,000
new cars in the EU (2010–2025)
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
Fuel: Diesel. Timing drive: chain.
In our database this engine is fitted to 9 model generations, among them: BMW 1 Series (F20), MINI Hatch (F56), BMW 1 Series (F40), BMW 2 Series Active Tourer (F45), BMW X1 (F48), BMW 2 Series Gran Tourer (F46) and 3 more.
The most expensive known risk is EGR cooler recall: it usually appears at 40,000–160,000 km and costs free / recall to fix.
Key facts
| Fuel | Diesel |
|---|---|
| Displacement | 1,496 cm³ |
| Power | 70–85 kW |
| Years | 2014–2027 |
| Timing drive | Chain |
| Oil | 5W-30 · BMW LL-04 · ~4.2 L · every 15,000 km |
| Engine codes | B37C15, B37D15 |
Known engine faults
Faults that belong to the engine itself. They apply to every model with this engine, and each model has its own extra faults on its model page.
Engine-related service
Intervals and typical prices, using the BMW 1 Series (F20) as an example. The app gives the exact plan for your car.
| Item | Interval | Typical price |
|---|---|---|
| DPF health check (soot / ash load)Emissions | every 20,000 km | €0–60 |
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Fuel filterFuel | every 30,000 km or every 24 months | €40–110 |
| Glow plugsEngine | every 100,000 km | €120–300 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
Models with this engine
Model generations this engine is fitted to.
BMW 1 Series (F20) 2011–2019BMW 1 Series (F40) 2019–2024BMW 2 Series Active Tourer (F45) 2014–2021BMW 2 Series Gran Tourer (F46) 2015–2022BMW X1 (F48) 2015–2022BMW X2 (F39) 2018–2023MINI Clubman (F54) 2015–2024MINI Countryman (F60) 2017–2024MINI Hatch (F56) 2014–2023
Common questions
Does the 1.5d 3-cyl (BMW / MINI B37) engine have a timing chain or a timing belt?
Chain.
What oil does the 1.5d 3-cyl (BMW / MINI B37) engine take?
5W-30 · BMW LL-04 · ~4.2 L · every 15,000 km.
What are the known problems with the 1.5d 3-cyl (BMW / MINI B37) engine?
The faults with the highest risk: EGR cooler recall (40,000–160,000 km, free / recall).
Which cars have the 1.5d 3-cyl (BMW / MINI B37) engine?
BMW 1 Series (F20), MINI Hatch (F56), BMW 1 Series (F40), BMW 2 Series Active Tourer (F45), BMW X1 (F48), BMW 2 Series Gran Tourer (F46) and 3 more.
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026