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BMW M47 vs e-Skyactiv D 3.3: which engine is more reliable?

According to our risk index, the e-Skyactiv D 3.3 carries less risk than the BMW M47: 21/100 (low risk) versus 79/100 (very high risk). The BMW M47 has 3 documented serious faults, the main one being «Intake swirl flap breakage (swirl flaps)»; the e-Skyactiv D 3.3 has 2 documented serious faults, the main one being «Stalling and restart failures due to control unit software».

Risk index

BMW M47

79

Very high risk · 3 serious faults

Risk index

e-Skyactiv D 3.3

21

Low risk · 2 serious faults

Lower risk

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

12 sourcesHow we work

Is the BMW M47 reliable?

The BMW M47 (1998-2007, a 4-cylinder diesel fitted to the 3 Series E46/E90, 1 Series E87, 5 Series E60, X3 E83, the Rover 75 and the Land Rover Freelander) is solid in its basic mechanicals, but the common rail versions, built since 2001, carry a serious and well-documented problem: the intake manifold swirl flaps can break and enter the cylinder, with a risk of engine damage. The turbo and injectors also account for known faults.[1][2][3][4]

See the 5 of the BMW M47 faults

Is the e-Skyactiv D 3.3 reliable?

The e-Skyactiv D 3.3 is an inline-six diesel with mild-hybrid assistance that Mazda debuted in the CX-60. It is a very recent engine: there is no in-service reliability data, and what is documented are software recalls (stalling, restarting, clutch) fixed at the official dealer.[5][6][7]

See the 2 of the e-Skyactiv D 3.3 faults

Side-by-side comparison

Comparison of BMW M47 and e-Skyactiv D 3.3
BMW M47e-Skyactiv D 3.3
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,995 cm³3,283 cm³
TimingChain—
Power116–163 hp254 hp
Production1998–2007[1][2][8][9]since 2022[10][11]
Reliability
Risk index (what is it?)79Very high risk21Low risk
Documented faults52
Of high or critical severity32
Worst severityCritical severityHigh severity
Main faults
  1. Critical severity: Intake swirl flap breakage (swirl flaps)
  2. High severity: Loss of power and turbo faults
  3. Medium severity: Blocked and seized injectors
  1. High severity: Stalling and restart failures due to control unit software
  2. High severity: Clutch between engine and electric motor that does not re-engage after braking
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • M47D20 116-136 hp (1998-2001)[1][3]
None
With cautionVersions to be cautious about
  • M47D20TU 116-150 hp (2001-2004)[1][3][4]
  • M47D20TU2 122-163 hp (2004-2007)[1]
  • M47R 116-131 hp (Rover 75, MG ZT and Land Rover Freelander, 1998-2006)[1][12]
  • 3.3 e-Skyactiv D 254 (T3-VPTS, 2022-present)[5][6][7]
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 M47

See the 7 models with the BMW M47

e-Skyactiv D 3.3

Other comparisons

With the BMW M47

With the e-Skyactiv D 3.3

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. BMW M47Wikipedia (inglés) · Other source · consulted 27 September 2026
  2. BMW M47D20 engine specifications, problems and reliabilityBimmerPulse · Technical documentation · consulted 27 September 2026
  3. Motor BMW M47: problemas y averíasDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
  4. BMW 3er E46: typische Probleme und SchwachstellenGebrauchtwagenberater · Technical documentation · consulted 27 September 2026 · in German
  5. DVSA – base de llamadas a revisión (Mazda CX-60)DVSA (Reino Unido) · Official body · consulted 29 October 2026
  6. Mazda CX-60 (2022 – 2024): engine stall (Safety Gate SR/01913/25)Car-Recalls.eu · Official body · published 23 May 2025 · consulted 29 October 2026
  7. Mazda CX-60: The engine not responding to the accelerator after stopping (KBA 14131R)Car-Recalls.eu · Official body · published 11 August 2025 · consulted 29 October 2026
  8. BMW M47Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  9. BMW 3 Series (E46)Wikipedia (inglés) · Other source · consulted 27 September 2026
  10. Skyactiv (apartado Skyactiv-D 3.3)Wikipedia (inglés) · Other source · consulted 29 October 2026
  11. Mazda CX-60 3.3 e-Skyactiv D MHEV 254ps AWD HomuraPractical Caravan · Motoring press · consulted 29 October 2026
  12. Rover 75Wikipedia (inglés) · Other source · consulted 27 September 2026