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BMW B57 vs 1.6 / 2.2 i-DTEC: which engine is more reliable?

According to our risk index, the BMW B57 carries less risk than the 1.6 / 2.2 i-DTEC: 22/100 (low risk) versus 54/100 (high risk). The BMW B57 has 3 documented serious faults, the main one being «EGR cooler leaks on the B57 (limited action on the 540d xDrive)»; the 1.6 / 2.2 i-DTEC has 3 documented serious faults, the main one being «Turbocharger failure».

Risk index

BMW B57

22

Low risk · 3 serious faults

Lower risk

Risk index

1.6 / 2.2 i-DTEC

54

High risk · 3 serious faults

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

11 sourcesHow we work

Is the BMW B57 reliable?

The BMW B57 (2015 onwards) is the six-cylinder diesel that succeeded the N57. The sources consulted document no widespread faults: its most cited weak point is the AdBlue/SCR system, and it was left out of the big EGR campaigns that hit the N47 and N57. The timing chain is still at the back, next to the gearbox.[1][2]

See the 4 of the BMW B57 faults

Is the 1.6 / 2.2 i-DTEC reliable?

The i-DTEC is Honda's diesel family from 2008, with two four-cylinder blocks: the 2.2 (Accord, CR-V) and, from 2013, the 1.6 (Civic, CR-V, HR-V). It uses a timing chain instead of a belt and common-rail injection. The basic architecture has a good reputation for longevity, but the emissions system (DPF and EGR) and the turbocharger account for most of the faults documented by owners themselves.[3][4][5][6]

See the 5 of the 1.6 / 2.2 i-DTEC faults

Side-by-side comparison

Comparison of BMW B57 and 1.6 / 2.2 i-DTEC
BMW B571.6 / 2.2 i-DTEC
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement2,993 cm³—
TimingChainChain
Power265–400 hp120–180 hp
Productionsince 2015[7][8]2008–2020[3][9][10]
Reliability
Risk index (what is it?)22Low risk54High risk
Documented faults45
Of high or critical severity33
Worst severityHigh severityCritical severity
Main faults
  1. Medium severity: AdBlue/SCR system fault (NOx sensors, heater and pump)
  2. High severity: EGR cooler leaks on the B57 (limited action on the 540d xDrive)
  3. High severity: Timing chain wear on the gearbox side
  1. High severity: Turbocharger failure
  2. Critical severity: Timing chain wear or breakage at high mileage
  3. Critical severity: Diesel injector wear or failure
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • B57D30 265 hp, single turbo (B57D30O0, 2015-2020)[1]
  • B57D30 286-340 hp, twin turbo with 48 V (B57D30O2/T2, 2020 onwards)[1]
With cautionVersions to be cautious about
  • B57D30 320 hp, twin turbo (B57D30T0, 2015-2020)[1]
  • B57D30 400 hp, four turbos (B57D30S0, 2016-2020)[1]
  • 1.6 i-DTEC 120 (N16A1, single turbo, from 2013)[4][11]
  • 1.6 i-DTEC 160 (N16A4, twin turbo, CR-V)[5]
  • 2.2 i-DTEC 180 Type S (N22B2, from 2010)[3]
AvoidVersions to avoidNoneNone

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 B57

See the 9 models with the BMW B57

1.6 / 2.2 i-DTEC

Other comparisons

With the BMW B57

With the 1.6 / 2.2 i-DTEC

Compare other engines

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Sources

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

  1. Motor BMW B57: fiabilidad y averíasDasercars · Motoring press · consulted 4 October 2026 · in Spanish
  2. Motor BMW N57: diferencias con el B57Dasercars · Motoring press · consulted 4 October 2026 · in Spanish
  3. Honda N engineWikipedia · Other source · consulted 27 September 2026
  4. Fiabilité et pannes Honda Civic (2012-2017)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
  5. Fiabilité et pannes Honda CR-V (2012-2019)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
  6. Fiabilité et pannes Honda CR-V (2007-2013)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
  7. BMW B57 (Wikipedia en)Wikipedia · Other source · consulted 4 October 2026
  8. BMW B57 (Wikipedia de)Wikipedia · Other source · consulted 4 October 2026 · in German
  9. Honda HR-VWikipedia · Other source · consulted 27 September 2026
  10. Avis et fiabilité Honda Accord (2008-2015)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
  11. Fiabilité et pannes Honda Civic (2017-2022)Fiches-auto.fr · Other source · consulted 27 September 2026 · in French