2024 MINI Cooper problems
The 2024 MINI Cooper was sold with 2 engines that we have documented: the BMW B48 / B38 and the BMW B38 / B37. None has documented serious faults for the cars of that year. The safest option is the BMW B38 / B37 (verdict “Buy”). Outside the engine, 2 documented faults affect 2024 cars, such as high-voltage battery cell modules out of specification (electric Cooper, risk of short circuit and fire).
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2024 MINI Cooper score: acceptable reliability
Calculated using only 7 documented faults and their sources: the most serious and frequent faults weigh more. How it is calculated
- Engine8.2From 7.6 to 8.9 depending on the engine
- Gearbox10.0No documented faults
- Suspension10.0No documented faults
- Brakes7.11 fault
- Tyres and wheels10.0No documented faults
- Steering10.0No documented faults
- Electrical system7.11 fault
- Headlights and lights10.0No documented faults
- Electronics and infotainment10.0No documented faults
- Climate control10.0No documented faults
- Bodywork and interior10.0No documented faults
- Airbags and safety10.0No documented faults
BMW B48 / B38 engine in the 2024 MINI Cooper
Names: Cooper C (1.5, 156 CV) · Cooper S (2.0, 204 CV)
- Buy
B38 1.5 136 hp (MINI Cooper, 118i)
136 hp · B38A15, B38B15
We have found no serious, widespread fault documented specifically for the B38; it shares with the rest of the family the same watch points around the cooling circuit and the oil seals.[2]
- Buy
B48 2.0 178-197 hp (120i, 220i, 320i, 520i, X1/X2/X3 20i, MINI Cooper S)
178–197 hp · B48A20, B48B20
It is the most widely fitted B48 version and has no serious, widespread fault on record; it is worth checking the cooling circuit and any oil leaks next to the turbo and the VANOS.[2]
Faults that affect 2024 cars
- Medium severityFrequency: OccasionalCoolingDeterioration of hoses and seals in the cooling circuit, with coolant lossYes: over the years and many heat cycles, the hoses, the expansion tank and some of the plastic seals in the B48/B38 cooling circuit can deteriorate and lose coolant, sometimes without any visible puddle under the car.
- Medium severityFrequency: OccasionalLubricationOil leaks or seepage from seals and covers, near the turbo and the VANOSYes: over time, oil seepage or leaks can appear at seals, covers and crankcase ventilation connections, in an area of the engine close to the turbo and the VANOS system.
- Low severityFrequency: CommonIntakeCarbon build-up on the intake valves (direct injection)Yes, as on most direct-injection engines: because they are not washed by fuel, the intake valves on the B48/B38 build up carbon over the years, especially in urban use, with a loss of smoothness and a less stable idle.
BMW B38 / B37 engine in the 2024 MINI Cooper
Names: Cooper C (1.5, 156 CV)
- Buy
B38 1.5 136-140 hp from April 2015 (B38A15 / B38B15)
136 hp · B38A15, B38B15
BMW says the bearing change eliminated the problem, and we have found no other serious, widespread fault documented in the press or by official bodies for these units.[3]
Faults that affect 2024 cars
- Medium severityFrequency: RareCoolingCoolant leaks and water pump or thermostat failure on the B38Two sources point to the cooling circuit (thermostat housing, electric water pump and hoses) as the most cited wear point on the B38, with leaks from around 70,000 km. The data is scarce and of uneven quality, so it is treated as a risk to watch rather than a widespread fault.
- Low severityFrequency: OccasionalIntakeCarbon build-up on the B38's intake valves and injectorsAs a direct-injection engine, the B38 builds up carbon deposits on the intake valves and injectors, like other direct-injection petrol engines. The German press cites it as the point to watch in an otherwise trouble-free engine, and it is noticed mainly on short journeys.
Faults outside the engine in the 2024 MINI Cooper
- Critical severityFrequency: OccasionalElectrical systemHigh-voltage battery cell modules out of specification (electric Cooper, risk of short circuit and fire)MINI has recalled electric Cooper (and Aceman) models because the high-voltage battery cell modules may not meet specification and could cause a short circuit, with a possible fire even with the car parked. The campaign started in January 2025 and was extended during 2025 to batches built between April 2023 and November 2024.
- Critical severityFrequency: OccasionalBrakesBrake booster with a hollow shaft badly welded (2025 campaign)In January 2025 MINI recalled Coopers, Countryman and Aceman models built between 12 December 2023 and 26 August 2024 because the weld on the hollow shaft of the brake servomotor can break under high braking pressures. The pedal requires more force, braking distance increases, and the ABS and DSC lose assistance.
Buying a 2024 MINI Cooper?
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Frequently asked questions
Is the 2024 MINI Cooper reliable?
The 2024 MINI Cooper was sold with 2 engines that we have documented: the BMW B48 / B38 and the BMW B38 / B37. None has documented serious faults for the cars of that year. The safest option is the BMW B38 / B37 (verdict “Buy”). Outside the engine, 2 documented faults affect 2024 cars, such as high-voltage battery cell modules out of specification (electric Cooper, risk of short circuit and fire).
What is the best year for the MINI Cooper?
According to our score, the best is 2026 (9.1/10). The year with the worst score is 2024 (6.9/10). Each year's score counts only the engines sold that year and the faults that affect those cars.
What faults does the 2024 MINI Cooper have?
The most important ones documented for 2024 cars are: high-voltage battery cell modules out of specification (electric Cooper, risk of short circuit and fire) (electrical system, critical severity), brake booster with a hollow shaft badly welded (2025 campaign) (brakes, critical severity), deterioration of hoses and seals in the cooling circuit, with coolant loss (BMW B48 / B38, medium severity), oil leaks or seepage from seals and covers, near the turbo and the VANOS (BMW B48 / B38, medium severity) and coolant leaks and water pump or thermostat failure on the B38 (BMW B38 / B37, medium severity).
Own a 2024 MINI Cooper? Tell us what faults you have had and at how many kilometres. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- Mini Cooper (J01)Wikipedia (inglés) · Other source · consulted 31 October 2026
- Motor BMW B48: defectos, mantenimiento y guía de compraRecambios y Accesorios BMW (blog) · Technical documentation · consulted 27 September 2026 · in Spanish
- BMW Dreizylinder: Dauertest-Probleme des B38 behoben?BimmerToday · Motoring press · published 5 October 2017 · consulted 4 October 2026 · in German