BMW B38 / B37 vs Drive-E gasolina: which engine is more reliable?

According to our risk index, the BMW B38 / B37 carries less risk than the Drive-E gasolina: 20/100 (low risk) versus 43/100 (moderate risk). The BMW B38 / B37 has 1 documented serious fault, the main one being «B38 crankshaft thrust bearing failure (units before April 2015)»; the Drive-E gasolina has 1 documented serious fault, the main one being «High oil consumption that can damage the turbo».

Risk index

BMW B38 / B37

Low risk · 1 serious fault

Lower risk

Risk index

Drive-E gasolina

Moderate risk · 1 serious fault

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

Reviewed on 30 October 202616 sources How we work

Is the BMW B38 / B37 reliable?

BMW and MINI's three-cylinder B38 (petrol) and B37 (diesel) have no serious, widespread documented fault. The only problem reported in the press is the crankshaft thrust bearing on early B38 units (up to April 2015), corrected by BMW. BMW's EGR campaigns affect four- and six-cylinder diesels, not the B37.^[1][2][3]

See the 3 of the BMW B38 / B37 faults

Is the Drive-E gasolina reliable?

The Volvo Drive-E petrol engine (2.0-litre 4-cylinder T2-T6/B4-B5 and, since 2018, 1.5-litre 3-cylinder T2-T3/B3) powers almost the entire Volvo range since 2013. Owners mainly document high oil consumption that can damage the turbo, carbon build-up on the intake valves caused by direct injection, and the odd coolant reservoir leak; we have not found Volvo acknowledging these faults with a campaign of its own for the petrol engine.^[4][5][6]

See the 4 of the Drive-E gasolina faults

Side-by-side comparison

Comparison of BMW B38 / B37 and Drive-E gasolina
Item	BMW B38 / B37	Drive-E gasolina
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,499 cm³	—
Timing	Chain	Chain
Power	75–231 hp	122–320 hp
Production	since 2014^[7][8][9]	since 2013^{[4][5][6][10][11][12]}
Reliability
Risk index (what is it?)	20Low risk	43Moderate risk
Documented faults	3	4
Of high or critical severity	1	1
Worst severity	Critical severity	High severity
Main faults	Critical severity: B38 crankshaft thrust bearing failure (units before April 2015) Medium severity: Coolant leaks and water pump or thermostat failure on the B38 Low severity: Carbon build-up on the B38's intake valves and injectors	High severity: High oil consumption that can damage the turbo Medium severity: Carbon build-up on injectors and intake valves due to direct injection Medium severity: Leak from the expansion tank or faulty cap in the cooling system
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	B38 1.5 136-140 hp from April 2015 (B38A15 / B38B15)^[1] B37 1.5 diesel 95-116 hp (B37C15K0 / B37C15U0), up to 2017^[13] B37TÜ1 1.5 diesel 95-116 hp (from late 2017)^[14]	None
With cautionVersions to be cautious about	B38 1.2 (B38A12, MINI One)^[8] B38 1.5 136 hp up to April 2015 (B38A15)^[1] B38K15T0 231 hp (BMW i8)^[15]	2.0 T2/T3/T4/T5/T6 and B4/B5 mild hybrid 4-cylinder (B4204T, Drive-E, 2013-present)^[4][5][6] 1.5 T2/T3 and B3 mild hybrid 3-cylinder (B3154T, Drive-E, since 2018)^[11][12][16]
AvoidVersions to avoid	None	None

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

BMW B38 / B37

See the 14 models with the BMW B38 / B37

Drive-E gasolina

See the 10 models with the Drive-E gasolina

Other comparisons

With the BMW B38 / B37

With the Drive-E gasolina

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Sources

Every fact on this page links to its source. If you find an error, let us know.

BMW Dreizylinder: Dauertest-Probleme des B38 behoben?BimmerToday · Motoring press · published 5 October 2017 · consulted 4 October 2026 · in German
2024: BMW recall due to EGR coolers extended againcar-recalls.eu · Motoring press · published 28 March 2024 · consulted 4 October 2026
BMW diésel Europa: llamada a revisión por el EGR y riesgo de incendioDiariomotor · Motoring press · consulted 4 October 2026 · in Spanish
Fiabilité et pannes Volvo XC60 (2008-2017)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
Volvo XC60 II (ab 2017) – Bekannte Probleme & KrankheitenGebrauchtwagenberater.de · Other source · published November 2022 · consulted 27 September 2026 · in German
Volvo V90 – Bekannte Probleme & KrankheitenGebrauchtwagenberater.de · Other source · published January 2024 · consulted 27 September 2026 · in German
BMW B38 (Wikipedia)Wikipedia · Other source · consulted 4 October 2026
BMW B38 (Wikipedia, alemán)Wikipedia · Other source · consulted 4 October 2026 · in German
BMW B37 (Wikipedia)Wikipedia · Other source · consulted 4 October 2026
Volvo Engine ArchitectureWikipedia · Other source · consulted 27 September 2026
Fiabilité et pannes Volvo V40Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
Volvo XC40 (seit 2017) – Typische Probleme & KrankheitenGebrauchtwagenberater.de · Other source · published March 2023 · consulted 27 September 2026 · in German
Project one M: MINI Cooper D F56 fährt eine Million Kilometer in 12 JahrenBimmerToday · Motoring press · published 24 June 2026 · consulted 4 October 2026 · in German
BMW Baukasten-Diesel: Mehr Infos zur TÜ1 für B47 und B37BimmerToday · Motoring press · published 20 November 2017 · consulted 4 October 2026 · in German
BMW i8 (Wikipedia)Wikipedia · Other source · consulted 4 October 2026
Fiabilité et pannes Volvo V60Fiches-auto.fr · Other source · consulted 27 September 2026 · in French