Skip to content
MotorFiable
en

Rover K-Series vs 1.0 and 1.4 Boosterjet: which engine is more reliable?

According to our risk index, the 1.0 and 1.4 Boosterjet carries less risk than the Rover K-Series: 6/100 (low risk) versus 46/100 (moderate risk). The Rover K-Series has 2 documented serious faults, the main one being «Head gasket failure»; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

Rover K-Series

46

Moderate risk · 2 serious faults

Risk index

1.0 and 1.4 Boosterjet

6

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

18 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 1.0 and 1.4 Boosterjet reliable?

The Suzuki Boosterjet (1.0 K10C and 1.4 K14C/K14D) is a turbocharged direct-injection petrol engine with a timing chain, fitted since 2015 to the Vitara, S-Cross, Swift Sport and Baleno, with a 48 V mild-hybrid variant of the 1.4 since 2020. German TÜV inspection reports and the workshops we consulted rate its reliability as high: no widespread fault with the chain, oil, fuel pump or mild-hybrid system is documented.[5][6][7][8][9]

See the 4 of the 1.0 and 1.4 Boosterjet faults

Side-by-side comparison

Comparison of Rover K-Series and 1.0 and 1.4 Boosterjet
Rover K-Series1.0 and 1.4 Boosterjet
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingTiming belt (dry)Chain
Power60–160 hp110–140 hp
Production1990–2005[2][10]since 2015[5][11][12][13]
Reliability
Risk index (what is it?)46Moderate risk6Low risk
Documented faults34
Of high or critical severity20
Worst severityHigh severityLow 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. Low severity: Timing chain: no documented pattern of failures
  2. Low severity: Oil consumption: no documented pattern
  3. Low severity: Direct injection and fuel pump: no documented faults or recalls
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.0 Boosterjet 110-112 hp (K10C, three-cylinder, 2015-present)[6][7][14][15]
  • 1.4 Boosterjet 140 hp (K14C, non-hybrid, 2015-2020 in Europe)[6][7][16]
  • 1.4 Boosterjet Mild Hybrid 129 hp (K14D, 48V SHVS, since 2020)[12][13]
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][17]
  • 1.8 VVC 145-160 hp (18K4K, 1995-2005)[17][18]
  • 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

1.0 and 1.4 Boosterjet

See the 12 models with the 1.0 and 1.4 Boosterjet

Other comparisons

With the Rover K-Series

With the 1.0 and 1.4 Boosterjet

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. Suzuki K engineWikipedia · Other source · consulted 27 September 2026
  6. Gebrauchtwagen-Check: Grundsätzlich gut: Der Suzuki Vitara beim TÜVVolksstimme (dpa) · General press · published January 2026 · consulted 27 September 2026 · in German
  7. Suzuki Swift als Gebrauchtwagen: Diese Punkte beanstandet der TÜV häufigT-Online · General press · published October 2025 · consulted 27 September 2026 · in German
  8. Los mecánicos recomiendan el Suzuki Vitara porque no presume de moderno, sino de sencillo y baratoEl Nacional · General press · published September 2026 · consulted 27 September 2026 · in Spanish
  9. Test complet Suzuki VitaraFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  10. Rover K-series engineWikipedia (en) · Other source · consulted 8 October 2026
  11. Suzuki motor KWikipedia · Other source · consulted 27 September 2026 · in Spanish
  12. Suzuki Swift Sport, Vitara y S-Cross: nuevas versiones micro-híbridas de 48VAutopista.es · Motoring press · published 16 December 2019 · consulted 27 September 2026 · in Spanish
  13. Suzuki S-Cross 1.4 Boosterjet Mild Hybrid 2020: precios y datos del nuevo SUVAutopista.es · Motoring press · published 12 March 2020 · consulted 27 September 2026 · in Spanish
  14. Suzuki Vitara : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  15. Suzuki Swift 3 : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  16. Prueba Suzuki Swift Sport 1.4 Boosterjet 140 CVActualidad Motor · Motoring press · published 16 May 2018 · consulted 27 September 2026 · in Spanish
  17. MG ZR ZS ZT & Modern Engine & FuelMGOC Spares · Technical documentation · consulted 8 October 2026
  18. MGF & TF Headgasket Repair KitsMGOC Spares · Technical documentation · consulted 8 October 2026