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1.4 and 1.6 TU3/TU5 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 1.4 and 1.6 TU3/TU5: 14/100 (low risk) versus 36/100 (moderate risk). The 1.4 and 1.6 TU3/TU5 has 1 documented serious fault, the main one being «Head gasket damaged after overheating»; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

1.4 and 1.6 TU3/TU5

36

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

13 sourcesHow we work

Is the 1.4 and 1.6 TU3/TU5 reliable?

The TU is one of PSA's most widely built petrol engines: more than 15.6 million units between 1986 and 2014. It is simple (no turbo, no direct injection or particulate filter, belt-driven timing) and has a reputation for durability. The faults owners cite most are cheap wear parts -ignition coils, sensors and thermostat- and not block failures or cylinder head design flaws.[1][2][3][4]

See the 5 of the 1.4 and 1.6 TU3/TU5 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 1.4 and 1.6 TU3/TU5 and 1.5 K15B (Jimny)
1.4 and 1.6 TU3/TU51.5 K15B (Jimny)
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—1,462 cm³
TimingTiming belt (dry)Chain
Power75–112 hp102 hp
Production1994–2014[1][8][9]since 2018[10][11][12]
Reliability
Risk index (what is it?)36Moderate risk14Low risk
Documented faults51
Of high or critical severity10
Worst severityHigh severityMedium severity
Main faults
  1. High severity: Head gasket damaged after overheating
  2. Medium severity: Ignition coils that fail and cause jerking
  3. Medium severity: Thermostat stuck open or closed
  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
  • TU3 1.4 75 hp 8v (TU3JP/TU3KFX, 1994-2014)[2][3]
  • TU5 1.6 88-90 hp 8v (TU5JP, from 1994)[9][13]
  • TU5 1.6 16v 109-112 hp (TU5JP4/TU5NFU, from 2000)[2][3][4]
  • 1.5 K15B 102 hp (Jimny IV, 2018-present)[5][6][7]
With cautionVersions to be cautious aboutNoneNone
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

1.4 and 1.6 TU3/TU5

See the 10 models with the 1.4 and 1.6 TU3/TU5

1.5 K15B (Jimny)

Other comparisons

With the 1.4 and 1.6 TU3/TU5

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. Moteur PSA TUWikipédia (francés) · Other source · consulted 27 September 2026 · in French
  2. Tous les problèmes sur Peugeot 206 (témoignages)Fiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  3. Tous les problèmes sur Peugeot 307 (témoignages)Fiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  4. Tous les problèmes sur Citroën Xsara (témoignages)Fiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  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. PSA TU engineWikipedia (inglés) · Other source · consulted 27 September 2026
  9. Peugeot 206Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  10. Suzuki K engineWikipedia · Other source · consulted 30 October 2026
  11. Suzuki motor KWikipedia · Other source · consulted 30 October 2026 · in Spanish
  12. Suzuki JimnyWikipedia · Other source · consulted 30 October 2026 · in Spanish
  13. Citroën XsaraWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish