2.0 TSI / TFSI vs BMW B48 / B38: which engine is more reliable?

According to our risk index, the BMW B48 / B38 carries less risk than the 2.0 TSI / TFSI: 24/100 (low risk) versus 54/100 (high risk). The 2.0 TSI / TFSI has 2 documented serious faults, the main one being «High oil consumption»; the BMW B48 / B38 has 1 documented serious fault, the main one being «Timing chain on the early units (2014-2018), redesigned in the B48TU».

Risk index

2.0 TSI / TFSI

High risk · 2 serious faults

Risk index

BMW B48 / B38

Low risk · 1 serious fault

Lower risk

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

Reviewed on 27 September 202615 sources How we work

Is the 2.0 TSI / TFSI reliable?

It depends above all on the generation. The earliest units (2008-2012, without Valvelift) have more oil consumption complaints and somewhat more chain and tensioner wear; from 2012 the Valvelift design reduced oil consumption but kept carbon build-up on the intake valves as a weak point until, around 2016, supplementary indirect injection was added. The thermostat housing with the integrated water pump leaks coolant in several generations.^{[1][2][3][4][5]}

See the 5 of the 2.0 TSI / TFSI faults

Is the BMW B48 / B38 reliable?

The BMW B48 (2.0 turbo, from 2014) and its three-cylinder sibling, the B38 (1.5), have a reputation as reliable engines within BMW's modern range: there is no serious, widespread fault on record, unlike the timing chain on the N47 diesel or the EGR fire risk on the B47. Keep an eye on the cooling circuit, the oil seals near the turbo and the VANOS, and the carbon build-up typical of direct injection; BMW revised the timing chain in 2018 (B48TU update).^[6][7][8]

See the 4 of the BMW B48 / B38 faults

Side-by-side comparison

Comparison of 2.0 TSI / TFSI and BMW B48 / B38
Item	2.0 TSI / TFSI	BMW B48 / B38
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,984 cm³	1,998 cm³
Timing	Chain	Chain
Power	170–320 hp	136–312 hp
Production	since 2008^[1][9]	since 2014^[6][10][11]
Reliability
Risk index (what is it?)	54High risk	24Low risk
Documented faults	5	4
Of high or critical severity	2	1
Worst severity	Critical severity	High severity
Main faults	High severity: High oil consumption Critical severity: Timing chain and tensioner wear Medium severity: Carbon build-up on the intake valves	Medium severity: Deterioration of hoses and seals in the cooling circuit, with coolant loss Medium severity: Oil leaks or seepage from seals and covers, near the turbo and the VANOS High severity: Timing chain on the early units (2014-2018), redesigned in the B48TU
Most expensive documented repair	up to €4,000High oil consumptionPublished figure^[12]	No reliable data
Which versions to buy
BuyRecommended versions	2.0 TSI/TFSI Gen 3B / evo, with added indirect injection (2016 onwards, 190-320 hp)^[1][5][13]	B38 1.5 136 hp (MINI Cooper, 118i)^[7] B48 2.0 178-197 hp (120i, 220i, 320i, 520i, X1/X2/X3 20i, MINI Cooper S)^[7] B48 2.0 252-258 hp (330i, 530i, X3/X4 xDrive30i)^[7][14] B48 2.0 up to 302-312 hp, high performance (MINI John Cooper Works, BMW X1 M35i)^[7]
With cautionVersions to be cautious about	2.0 TSI/TFSI Gen 1, without Valvelift (2008-2012, 170-220 hp)^{[2][3][13][15]} 2.0 TSI/TFSI Gen 2/3, with Valvelift and direct injection only (2012-2016, 180-230 hp)^[2][3][13]	None
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

2.0 TSI / TFSI

See the 37 models with the 2.0 TSI / TFSI

BMW B48 / B38

See the 17 models with the BMW B48 / B38

Other comparisons

With the 2.0 TSI / TFSI

With the BMW B48 / B38

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Sources

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

Volkswagen EA888 engineWikipedia (inglés) · Other source · consulted 26 September 2026
Fiabilité Volkswagen (datos de propietarios por modelo)fiches-auto.fr · Reliability study · consulted 26 September 2026 · in French
Fiabilité Audi (datos de propietarios por modelo)fiches-auto.fr · Reliability study · consulted 26 September 2026 · in French
Motores TFSI: características, ventajas e inconvenientesAutofácil · Motoring press · published 18 May 2020 · consulted 26 September 2026 · in Spanish
Motor 2.0 TFSI 190 CV (ficha técnica)km77 · Technical documentation · published 13 May 2015 · consulted 26 September 2026 · in Spanish
BMW B48Wikipedia (inglés) · Other source · consulted 27 September 2026
Motor BMW B48: defectos, mantenimiento y guía de compraRecambios y Accesorios BMW (blog) · Technical documentation · consulted 27 September 2026 · in Spanish
BMW Reliability Has Changed, But the Internet Hasn't Caught UpBMWBLOG · Other source · published January 2026 · consulted 27 September 2026
Audi TTWikipedia (inglés) · Other source · consulted 26 September 2026
BMW B38Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW B48Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Tu coche quema aceite: 6 señales de alarma y la solución definitiva para salvar tu motorAutopista.es · Motoring press · published 19 June 2026 · consulted 26 September 2026 · in Spanish
Témoignages fiabilité Audifiches-auto.fr · Owners' forum · consulted 26 September 2026 · in French
5 BMWs That Prove the B48 Four-Cylinder Engine Is Better Than You ThinkBMWBLOG · Other source · published April 2026 · consulted 27 September 2026
Témoignages fiabilité Volkswagenfiches-auto.fr · Owners' forum · consulted 26 September 2026 · in French