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Porsche MA1 / 9A1 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 Porsche MA1 / 9A1: 14/100 (low risk) versus 25/100 (moderate risk). The Porsche MA1 / 9A1 has 1 documented serious fault, the main one being «Bore scoring in the MA1 of the 997.2 and 987.2: uncommon, but documented»; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

Porsche MA1 / 9A1

25

Moderate risk · 1 serious fault

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

17 sourcesHow we work

Is the Porsche MA1 / 9A1 reliable?

Yes, it is noticeably more reliable than the M96/M97: it eliminated the intermediate shaft with its IMS bearing and, according to FCP Euro, the connecting rod bolt failures. What is documented is minor: carbon build-up on the intake valves caused by direct injection, coolant pump leaks on the 991.1 and, rarely, bore scoring on the 997.2.[1][2][3][4]

See the 3 of the Porsche MA1 / 9A1 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.[5][6][7]

See the of the 1.5 K15B (Jimny) fault

Side-by-side comparison

Comparison of Porsche MA1 / 9A1 and 1.5 K15B (Jimny)
Porsche MA1 / 9A11.5 K15B (Jimny)
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—1,462 cm³
TimingChainChain
Power255–400 hp102 hp
Production2009–2016[1][4][8][9][10][11][12]since 2018[13][14][15]
Reliability
Risk index (what is it?)25Moderate risk14Low risk
Documented faults31
Of high or critical severity10
Worst severityCritical severityMedium severity
Main faults
  1. Critical severity: Bore scoring in the MA1 of the 997.2 and 987.2: uncommon, but documented
  2. Medium severity: Carbon build-up on the intake valves caused by direct injection
  3. Medium severity: Leaks from the electronically controlled coolant pumps of the 991.1 and the plastic water pump
  1. Medium severity: Fuel pump with resin impeller that swells (recall)
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • 3.6 Carrera 345 hp (MA1.02, 2009-2012)[1][3][4]
  • 3.8 Carrera S 385 hp (MA1.01, 2009-2012)[3][4]
  • 2.9 Boxster/Cayman 255-265 hp (MA1.20, 2009-2012, no direct injection)[2][8]
  • 1.5 K15B 102 hp (Jimny IV, 2018-present)[5][6][7]
With cautionVersions to be cautious about
  • 3.4 Boxster S / Cayman S 310-320 hp (MA1.21/.22, 2009-2012, direct injection)[2][16]
  • 3.4 Carrera 350 hp (MA1.04, 2011-2015)[3]
  • 3.8 Carrera S 400 hp (MA1.03, 2011-2015)[3]
  • 2.7 Boxster/Cayman 265-275 hp (MA1.22, 2012-2016)[16][17]
  • 3.4 Boxster S / Cayman S / GTS 315-340 hp (MA1.23, 2012-2016)[16][17]
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

Porsche MA1 / 9A1

1.5 K15B (Jimny)

Other comparisons

With the Porsche MA1 / 9A1

With the 1.5 K15B (Jimny)

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Sources

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

  1. The Definitive Guide To Porsche 997 Engines (M96.05, M97, MA1)FCP Euro · Other source · published 16 January 2024 · consulted 2 November 2026
  2. Porsche 987: The Cayman and Boxster Generation GuideRenn Driver · Other source · published 1 November 2026 · consulted 2 November 2026
  3. Porsche 911: 5 Generationen im Gebrauchtwagen-CheckAUTO BILD · Motoring press · published 22 September 2026 · consulted 2 November 2026 · in German
  4. Porsche 997Wikipedia · Other source · consulted 2 November 2026
  5. Problemas Suzuki JimnyTotalrenting · General press · consulted 30 October 2026 · in Spanish
  6. Suzuki Jimny: problemas comunes y llamadas a revisióncar-recalls.eu · Other source · consulted 30 October 2026 · in Spanish
  7. Suzuki Jimny Problemecarwiki.de · General press · consulted 30 October 2026 · in German
  8. Porsche Boxster and Cayman (987)Wikipedia · Other source · consulted 2 November 2026
  9. Porsche 991Wikipedia · Other source · consulted 2 November 2026
  10. Porsche Boxster and Cayman (981)Wikipedia · Other source · consulted 2 November 2026
  11. Differences between M96 and M97 enginesFlat Six Innovations · Other source · published 25 November 2025 · consulted 2 November 2026
  12. List of Porsche enginesWikipedia · Other source · consulted 2 November 2026
  13. Suzuki K engineWikipedia · Other source · consulted 30 October 2026
  14. Suzuki motor KWikipedia · Other source · consulted 30 October 2026 · in Spanish
  15. Suzuki JimnyWikipedia · Other source · consulted 30 October 2026 · in Spanish
  16. Porsche Cayman and Boxster Common Problems: A Specialist Field GuideForeign Automotive · Other source · consulted 2 November 2026
  17. Porsche 981: The Cayman and Boxster Generation GuideRenn Driver · Other source · consulted 2 November 2026