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2.3 MZR DISI Turbo vs 1.5 K15B (Jimny): which engine is more reliable?

According to our risk index, the 1.5 K15B (Jimny) carries less risk than the 2.3 MZR DISI Turbo: 14/100 (low risk) versus 63/100 (high risk). The 2.3 MZR DISI Turbo has 2 documented serious faults, the main one being «Timing chain stretch and VVT actuator failure on the 2.3 DISI Turbo»; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

2.3 MZR DISI Turbo

63

High risk · 2 serious faults

Risk index

1.5 K15B (Jimny)

14

Low risk · 0 serious faults

Lower risk

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

10 sourcesHow we work

Is the 2.3 MZR DISI Turbo reliable?

Mazda's 2.3 DISI Turbo (L3-VDT, 2005-2013) is powerful but demanding: the timing chain, the turbo and oil sludge are its weak points; only buy one with a good oil service history.[1][2][3]

See the 3 of the 2.3 MZR DISI Turbo faults

Is the 1.5 K15B (Jimny) reliable?

The 1.5 K15B in the Suzuki Jimny is a 102 hp naturally aspirated four-cylinder with a timing chain, simple and with no documented faults of its own. The only thing recorded in Europe is a 2018-2020 recall for the fuel pump, precautionary and with a definitive remedy.[4][5][6]

See the of the 1.5 K15B (Jimny) fault

Side-by-side comparison

Comparison of 2.3 MZR DISI Turbo and 1.5 K15B (Jimny)
2.3 MZR DISI Turbo1.5 K15B (Jimny)
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement2,261 cm³1,462 cm³
TimingChainChain
Power256–263 hp102 hp
Production2005–2013[1][7]since 2018[8][9][10]
Reliability
Risk index (what is it?)63High risk14Low risk
Documented faults31
Of high or critical severity20
Worst severityCritical severityMedium severity
Main faults
  1. Critical severity: Timing chain stretch and VVT actuator failure on the 2.3 DISI Turbo
  2. High severity: Premature turbocharger wear from poor lubrication on the 2.3 DISI Turbo
  3. Medium severity: Oil consumption and sludge in the 2.3 DISI Turbo engine
  1. Medium severity: Fuel pump with resin impeller that swells (recall)
Most expensive documented repairup to €2,200Premature turbocharger wear from poor lubrication on the 2.3 DISI TurboPublished figure[2]No reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.5 K15B 102 hp (Jimny IV, 2018-present)[4][5][6]
With cautionVersions to be cautious about
  • 2.3 MZR DISI Turbo 256-260 hp (L3-VDT, 2005-2009)[1][2]
  • 2.3 MZR DISI Turbo (L3-VDT, 2010-2013)[1][2]
None
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

2.3 MZR DISI Turbo

1.5 K15B (Jimny)

Other comparisons

With the 2.3 MZR DISI Turbo

With the 1.5 K15B (Jimny)

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. Mazda L engineWikipedia (inglés) · Other source · consulted 5 October 2026
  2. Problemas Mazda CX-7Totalrenting · Other source · consulted 5 October 2026 · in Spanish
  3. 2009 Mazda CX-7 engine problemsCarComplaints · Owners' forum · consulted 5 October 2026
  4. Problemas Suzuki JimnyTotalrenting · General press · consulted 30 October 2026 · in Spanish
  5. Suzuki Jimny: problemas comunes y llamadas a revisióncar-recalls.eu · Other source · consulted 30 October 2026 · in Spanish
  6. Suzuki Jimny Problemecarwiki.de · General press · consulted 30 October 2026 · in German
  7. Mazda CX-7Wikipedia (inglés) · Other source · consulted 5 October 2026
  8. Suzuki K engineWikipedia · Other source · consulted 30 October 2026
  9. Suzuki motor KWikipedia · Other source · consulted 30 October 2026 · in Spanish
  10. Suzuki JimnyWikipedia · Other source · consulted 30 October 2026 · in Spanish