BMW B48 / B38 vs 2.2 Ecotec gasolina: which engine is more reliable?

According to our risk index, the BMW B48 / B38 carries less risk than the 2.2 Ecotec gasolina: 24/100 (low risk) versus 50/100 (high risk). 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»; the 2.2 Ecotec gasolina has 1 documented serious fault, the main one being «Stretched timing chain and seized tensioner on the 2.2 Ecotec».

Risk index

BMW B48 / B38

Low risk · 1 serious fault

Lower risk

Risk index

2.2 Ecotec gasolina

High 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 2 November 202615 sources How we work

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).^[1][2][3]

See the 4 of the BMW B48 / B38 faults

Is the 2.2 Ecotec gasolina reliable?

This is the 2.2 petrol engine producing 147 to 155 hp in the Astra G, Zafira, Vectra and Signum. Its documented weak point is the timing chain, which stretches and can end in serious engine damage; the 2.2 Direct adds a high-pressure pump prone to failure.^[4][5][6]

See the 2 of the 2.2 Ecotec gasolina faults

Side-by-side comparison

Comparison of BMW B48 / B38 and 2.2 Ecotec gasolina
Item	BMW B48 / B38	2.2 Ecotec gasolina
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,998 cm³	2,198 cm³
Timing	Chain	Chain
Power	136–312 hp	147–155 hp
Production	since 2014^[1][7][8]	2000–2010^{[9][10][11][12]}
Reliability
Risk index (what is it?)	24Low risk	50High risk
Documented faults	4	2
Of high or critical severity	1	1
Worst severity	High severity	Critical severity
Main faults	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	Critical severity: Stretched timing chain and seized tensioner on the 2.2 Ecotec Medium severity: Faulty high-pressure pump or pressure regulator (P1191) on the 2.2 Direct
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	B38 1.5 136 hp (MINI Cooper, 118i)^[2] B48 2.0 178-197 hp (120i, 220i, 320i, 520i, X1/X2/X3 20i, MINI Cooper S)^[2] B48 2.0 252-258 hp (330i, 530i, X3/X4 xDrive30i)^[2][13] B48 2.0 up to 302-312 hp, high performance (MINI John Cooper Works, BMW X1 M35i)^[2]	None
With cautionVersions to be cautious about	None	2.2 16V 147 hp (Z22SE, 2000-2005)^[4][5][14] 2.2 Direct 150-155 hp (Z22YH, 2003-2010)^{[4][5][6][15]}
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 B48 / B38

See the 21 models with the BMW B48 / B38

2.2 Ecotec gasolina

Other comparisons

With the BMW B48 / B38

With the 2.2 Ecotec gasolina

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Sources

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

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
PROTIPS febi 33044: tensor de cadena para los motores Opel 2.2 de gasolina (Z22YH y Z22SE)febi bilstein (Ferdinand Bilstein GmbH) · Technical documentation · published January 2019 · consulted 2 November 2026 · in German
Opel Vectra C: ProblemeGebrauchtwagenberater.de · Motoring press · consulted 2 November 2026 · in German
Opel Zafira B 2005-2014: Probleme und SchwachstellenGebrauchtwagenberater.de · Motoring press · consulted 2 November 2026 · in German
BMW B38Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW B48Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Opel Astra GWikipedia (de) · Other source · consulted 2 November 2026 · in German
Opel Zafira AWikipedia (de) · Other source · consulted 2 November 2026 · in German
Opel Vectra CWikipedia (de) · Other source · consulted 2 November 2026 · in German
Opel Zafira BWikipedia (de) · Other source · consulted 2 November 2026 · in German
5 BMWs That Prove the B48 Four-Cylinder Engine Is Better Than You ThinkBMWBLOG · Other source · published April 2026 · consulted 27 September 2026
Fiabilité Opel Zafira (1999-2005): pannes par moteurFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Blitz-Info: Opel Signum 2.2 L, año 2003-2004, motor Z22YH (testigo del motor encendido)Hella · Technical documentation · published 31 March 2006 · consulted 2 November 2026 · in German