Skip to content
MotorFiable
en

Rover K-Series 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 Rover K-Series: 14/100 (low risk) versus 46/100 (moderate risk). The Rover K-Series has 2 documented serious faults, the main one being «Head gasket failure»; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

Rover K-Series

46

Moderate 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

13 sourcesHow we work

Is the Rover K-Series reliable?

The Rover K-Series has one very well-known fault: the head gasket, which according to Diariomotor can fail at under 100,000 km and which technical sources link to a small cooling circuit and a badly placed thermostat. The usual repair uses the multi-layer (MLS) gasket developed for the Freelander; the other two documented faults (sunken liners and coolant leaks) are related to that same circuit.[1][2][3][4]

See the 3 of the Rover K-Series 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 Rover K-Series and 1.5 K15B (Jimny)
Rover K-Series1.5 K15B (Jimny)
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—1,462 cm³
TimingTiming belt (dry)Chain
Power60–160 hp102 hp
Production1990–2005[2][8]since 2018[9][10][11]
Reliability
Risk index (what is it?)46Moderate risk14Low risk
Documented faults31
Of high or critical severity20
Worst severityHigh severityMedium severity
Main faults
  1. High severity: Head gasket failure
  2. High severity: Sunken cylinder liners and warped head after overheating
  3. Medium severity: Coolant leaks: expansion tank cap, rear block rail and hoses
  1. Medium severity: Fuel pump with resin impeller that swells (recall)
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.5 K15B 102 hp (Jimny IV, 2018-present)[5][6][7]
With cautionVersions to be cautious about
  • 1.1 K8 60 hp / K16 75 hp (Rover 25, 1998-2005)[1][4]
  • 1.4 8V/16V 74-103 hp (14K2F / 14K4F, 1995-2005)[1][3]
  • 1.6 16V 109-116 hp (16K4F, 1995-2005)[1][3]
  • 1.8 16V 117-136 hp (18K4F, 1995-2005)[1][3][12]
  • 1.8 VVC 145-160 hp (18K4K, 1995-2005)[12][13]
  • 1.8 T turbo 150-160 hp (18K4T, 2002-2005)[1][4]
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

Rover K-Series

See the 12 models with the Rover K-Series

1.5 K15B (Jimny)

Other comparisons

With the Rover K-Series

With the 1.5 K15B (Jimny)

Compare other engines

That is the comparison you are viewing: change one of the two engines.

Sources

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

  1. Guía de compra del MG TF de segunda manoDiariomotor · Motoring press · published 7 November 2023 · consulted 8 October 2026 · in Spanish
  2. MG TF (2002)Wikipedia (en) · Other source · consulted 8 October 2026
  3. Choosing the correct K Series Head Gasket KitDMGRS · Technical documentation · consulted 8 October 2026
  4. Cooling and heating (K-Series: ZR, ZS, ZT, MGF, TF)MGOC Spares · Technical documentation · consulted 8 October 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. Rover K-series engineWikipedia (en) · Other source · consulted 8 October 2026
  9. Suzuki K engineWikipedia · Other source · consulted 30 October 2026
  10. Suzuki motor KWikipedia · Other source · consulted 30 October 2026 · in Spanish
  11. Suzuki JimnyWikipedia · Other source · consulted 30 October 2026 · in Spanish
  12. MG ZR ZS ZT & Modern Engine & FuelMGOC Spares · Technical documentation · consulted 8 October 2026
  13. MGF & TF Headgasket Repair KitsMGOC Spares · Technical documentation · consulted 8 October 2026