Petrol · 2024–now
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All about the MINI Hatch (F66 / J01)All about the 1.2 / 1.5 3-cyl petrol (BMW / MINI B38) engine
The 1.5 3-cyl petrol (BMW / MINI B38) engine was fitted to the MINI Hatch (F66 / J01) (2024–now). In the EU that is 12.8 % of all new cars of this generation.
Versions: 1.5 136 hp.
The most expensive known risk is coolant leaks: oil filter housing, thermostat, turbo coolant lines: it usually appears at 60,000–160,000 km and costs €150–700 to fix.
✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
Signs: Coolant level warning, sweet smell or burning smell, coolant traces around the housing or turbo
Fix: Pressure-test the cooling system; replace the leaking housing, thermostat, hose or turbo line O-rings
Signs: Rough idle, misfire codes, slight power loss and higher fuel use
Fix: Confirm with an endoscope, then clean the intake valves (walnut blasting)
Signs: Harsh shifts
Fix: Repair; keep oil changes at 60,000 km
Typical routine maintenance cost for 100,000 km: €2,250–5,200. Sum of the services and wear parts in the plan above (about 15,000 km a year, independent workshop), without faults.
Intervals and typical prices for the MINI Hatch (F66 / J01) with the 1.5 3-cyl petrol (BMW / MINI B38) engine. The app gives the exact plan for your mileage.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| DSG/DCT oil + filterTransmission | every 60,000 km | €70–250 |
| 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 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 1.5 Petrol1,499 cm³ · 100 kW (136 hp) | 12.8 % | 2024–2025 | 129 g/km | 5.7 L |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
The faults with the highest risk: coolant leaks: oil filter housing, thermostat, turbo coolant lines (60,000–160,000 km, €150–700).
Chain.
0W-20 / 5W-30 · BMW LL-17FE+ / LL-01 · ~4.25 L · every 15,000 km.
BMW 1 Series (F20) 2011–2019MINI Hatch (F56) 2014–2023BMW X1 (F48) 2015–2022BMW 1 Series (F40) 2019–2024BMW X1 (U11) 2022–MINI Countryman (F60) 2017–2024BMW 2 Series Active Tourer (F45) 2014–2021BMW X2 (F39) 2018–2023MINI Clubman (F54) 2015–2024BMW 2 Series Active Tourer (U06) 2021–BMW 2 Series Gran Tourer (F46) 2015–2022BMW X2 (U10) 2023–
Main sources for the faults of this engine:
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. How we check the data →
Updated 29/10/2026