Rover K-Series vs 1.2 Dualjet and 1.2 VVT: which engine is more reliable?
According to our risk index, the 1.2 Dualjet and 1.2 VVT carries less risk than the Rover K-Series: 23/100 (low risk) versus 46/100 (moderate risk). The Rover K-Series has 2 documented serious faults, the main one being «Head gasket failure»; the 1.2 Dualjet and 1.2 VVT has no documented serious faults.
The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated
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 faultsIs the 1.2 Dualjet and 1.2 VVT reliable?
The Suzuki 1.2 VVT and 1.2 Dualjet (K12B/K12C/K12M) is a naturally aspirated petrol engine with a timing chain and indirect injection, fitted since 2008 to the Splash, Swift, Ignis and Baleno, with an SHVS mild-hybrid variant since 2016. It is reliable: there is no serious documented fault with the engine block itself; the main points are a clutch that wears out sooner than expected on some cars and two SHVS recalls that have already been resolved.[5][6][7][8][9]
See the 5 of the 1.2 Dualjet and 1.2 VVT faultsSide-by-side comparison
| Item | Rover K-Series | 1.2 Dualjet and 1.2 VVT |
|---|---|---|
| Technical data | ||
| Type | Engine | Engine |
| Fuel | Petrol | Petrol |
| Displacement | — | — |
| Timing | Timing belt (dry) | Chain |
| Power | 60–160 hp | 82–92 hp |
| Production | 1990–2005[2][10] | since 2008[5][6] |
| Reliability | ||
| Risk index (what is it?) | 46Moderate risk | 23Low risk |
| Documented faults | 3 | 5 |
| Of high or critical severity | 2 | 0 |
| Worst severity | High severity | Medium severity |
| Main faults |
|
|
| Most expensive documented repair | No reliable data | No reliable data |
| Which versions to buy | ||
| BuyRecommended versions | None | |
| With cautionVersions to be cautious about | None | |
| AvoidVersions to avoid | None | None |
Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them
Cars that each one is fitted to
Other comparisons
With the Rover K-Series
- Rover K-Series vs 1.2 PureTech
- Rover K-Series vs 1.0 PureTech
- Rover K-Series vs 1.2 and 1.4 TSI
- Rover K-Series vs 1.0 TSI / 1.5 TSI
- Rover K-Series vs 1.2 TCe
- Rover K-Series vs 1.0 EcoBoost
- Rover K-Series vs 1.3 TCe
- Rover K-Series vs 1.6 EcoBoost
- Rover K-Series vs 2.0 TSI / TFSI
- Rover K-Series vs Audi 3.0 TFSI V6
- Rover K-Series vs BMW B38 / B37
- Rover K-Series vs BMW B48 / B38
- Rover K-Series vs BMW B58
- Rover K-Series vs BMW M54
- Rover K-Series vs BMW N13
- Rover K-Series vs BMW N20
- Rover K-Series vs BMW N43/N46
- Rover K-Series vs BMW N52 / N53
- Rover K-Series vs BMW N54/N55
- Rover K-Series vs BMW N62 / N63
- Rover K-Series vs 1.2 8v Fire
- Rover K-Series vs 1.4 T-Jet
- Rover K-Series vs 1.0 T3 and 1.3 T4 FireFly Turbo
- Rover K-Series vs 0.9 TwinAir and 1.0/1.3 FireFly
- Rover K-Series vs 1.5 EcoBoost
- Rover K-Series vs 1.25/1.4/1.6 Ti-VCT
- Rover K-Series vs 1.2 / 1.4 / 1.8 i-VTEC
- Rover K-Series vs 1.0 / 1.5 VTEC Turbo
- Rover K-Series vs 2.0 / 2.4 i-VTEC
- Rover K-Series vs Honda e:HEV / i-MMD
- Rover K-Series vs Honda IMA híbrido
- Rover K-Series vs 1.0 T-GDI
- Rover K-Series vs 1.6 GDI / T-GDI
- Rover K-Series vs 1.6 GDi híbrido (Kappa)
- Rover K-Series vs 1.0 / 1.25 MPi
- Rover K-Series vs Smartstream 1.6 T-GDi
- Rover K-Series vs 2.0 / 2.4 GDI and T-GDI (Theta II)
- Rover K-Series vs 2.0 and 3.0 Ingenium gasolina
- Rover K-Series vs 2.3 MZR DISI Turbo
- Rover K-Series vs MZR gasolina
- Rover K-Series vs Skyactiv-G
- Rover K-Series vs M111
- Rover K-Series vs M112 / M113
- Rover K-Series vs M264/M254
- Rover K-Series vs M260
- Rover K-Series vs M271
- Rover K-Series vs M272/M273
- Rover K-Series vs M270/M274
- Rover K-Series vs 1.5 VTi-TECH / T-GDI
- Rover K-Series vs MIVEC gasolina
- Rover K-Series vs Mitsubishi PHEV
- Rover K-Series vs 1.6 DIG-T
- Rover K-Series vs 1.5 VC-Turbo e-Power
- Rover K-Series vs 1.2 HR12DE and 1.2 DIG-S (HR12DDR)
- Rover K-Series vs 2.0 MR20DE / 2.5 QR25DE
- Rover K-Series vs 1.6 16v HR16DE / H4M
- Rover K-Series vs 1.0/1.2/1.4 Ecotec
- Rover K-Series vs 1.4 Turbo
- Rover K-Series vs 1.6 and 1.8 Ecotec 16v
- Rover K-Series vs Porsche V8 and V6 (Cayenne and Panamera)
- Rover K-Series vs 1.4 and 1.6 TU3/TU5
- Rover K-Series vs 1.4/1.6 VTi
- Rover K-Series vs 1.6 THP
- Rover K-Series vs 2.0 and 2.2 16v EW10/EW12
- Rover K-Series vs 0.9 TCe
- Rover K-Series vs 1.0 SCe (B4D)
- Rover K-Series vs 1.0 TCe / SCe
- Rover K-Series vs 1.4 and 1.6 8v
- Rover K-Series vs 1.2 16v
- Rover K-Series vs E-Tech Híbrido
- Rover K-Series vs 2.0 16v F4R and F4RT
- Rover K-Series vs 1.4 and 1.6 16v
- Rover K-Series vs 1.0 and 1.4 Boosterjet
- Rover K-Series vs 1.5 K15B (Jimny)
- Rover K-Series vs 1.3, 1.5 and 1.6 gasolina (serie M)
- Rover K-Series vs 1.0 VVT-i
- Rover K-Series vs 1.2 Turbo
- Rover K-Series vs 1.33 Dual VVT-i
- Rover K-Series vs 1.4, 1.6 and 1.8 VVT-i
- Rover K-Series vs 1.5 Hybrid
- Rover K-Series vs 1.6 Dual VVT-i
- Rover K-Series vs 1.8 Hybrid
- Rover K-Series vs 2.0 and 2.4 VVT-i
- Rover K-Series vs 2.0 and 2.5 Hybrid
- Rover K-Series vs Volvo 5 cilindros gasolina
- Rover K-Series vs Drive-E gasolina
- Rover K-Series vs 1.0 MPI
- Rover K-Series vs 1.2 12V
- Rover K-Series vs 1.4 16v and 1.6 MPI/FSI
- Rover K-Series vs 1.8 T 20v
- Rover K-Series vs 2.0 FSI
- Rover K-Series vs VW 2.0 TFSI EA113
With the 1.2 Dualjet and 1.2 VVT
- 1.2 Dualjet and 1.2 VVT vs 1.2 PureTech
- 1.2 Dualjet and 1.2 VVT vs 1.0 PureTech
- 1.2 Dualjet and 1.2 VVT vs 1.2 and 1.4 TSI
- 1.2 Dualjet and 1.2 VVT vs 1.0 TSI / 1.5 TSI
- 1.2 Dualjet and 1.2 VVT vs 1.2 TCe
- 1.2 Dualjet and 1.2 VVT vs 1.0 EcoBoost
- 1.2 Dualjet and 1.2 VVT vs 1.3 TCe
- 1.2 Dualjet and 1.2 VVT vs 1.6 EcoBoost
- 1.2 Dualjet and 1.2 VVT vs 2.0 TSI / TFSI
- 1.2 Dualjet and 1.2 VVT vs Audi 3.0 TFSI V6
- 1.2 Dualjet and 1.2 VVT vs BMW B38 / B37
- 1.2 Dualjet and 1.2 VVT vs BMW B48 / B38
- 1.2 Dualjet and 1.2 VVT vs BMW B58
- 1.2 Dualjet and 1.2 VVT vs BMW M54
- 1.2 Dualjet and 1.2 VVT vs BMW N13
- 1.2 Dualjet and 1.2 VVT vs BMW N20
- 1.2 Dualjet and 1.2 VVT vs BMW N43/N46
- 1.2 Dualjet and 1.2 VVT vs BMW N52 / N53
- 1.2 Dualjet and 1.2 VVT vs BMW N54/N55
- 1.2 Dualjet and 1.2 VVT vs BMW N62 / N63
- 1.2 Dualjet and 1.2 VVT vs 1.2 8v Fire
- 1.2 Dualjet and 1.2 VVT vs 1.4 T-Jet
- 1.2 Dualjet and 1.2 VVT vs 1.0 T3 and 1.3 T4 FireFly Turbo
- 1.2 Dualjet and 1.2 VVT vs 0.9 TwinAir and 1.0/1.3 FireFly
- 1.2 Dualjet and 1.2 VVT vs 1.5 EcoBoost
- 1.2 Dualjet and 1.2 VVT vs 1.25/1.4/1.6 Ti-VCT
- 1.2 Dualjet and 1.2 VVT vs 1.2 / 1.4 / 1.8 i-VTEC
- 1.2 Dualjet and 1.2 VVT vs 1.0 / 1.5 VTEC Turbo
- 1.2 Dualjet and 1.2 VVT vs 2.0 / 2.4 i-VTEC
- 1.2 Dualjet and 1.2 VVT vs Honda e:HEV / i-MMD
- 1.2 Dualjet and 1.2 VVT vs Honda IMA híbrido
- 1.2 Dualjet and 1.2 VVT vs 1.0 T-GDI
- 1.2 Dualjet and 1.2 VVT vs 1.6 GDI / T-GDI
- 1.2 Dualjet and 1.2 VVT vs 1.6 GDi híbrido (Kappa)
- 1.2 Dualjet and 1.2 VVT vs 1.0 / 1.25 MPi
- 1.2 Dualjet and 1.2 VVT vs Smartstream 1.6 T-GDi
- 1.2 Dualjet and 1.2 VVT vs 2.0 / 2.4 GDI and T-GDI (Theta II)
- 1.2 Dualjet and 1.2 VVT vs 2.0 and 3.0 Ingenium gasolina
- 1.2 Dualjet and 1.2 VVT vs 2.3 MZR DISI Turbo
- 1.2 Dualjet and 1.2 VVT vs MZR gasolina
- 1.2 Dualjet and 1.2 VVT vs Skyactiv-G
- 1.2 Dualjet and 1.2 VVT vs M111
- 1.2 Dualjet and 1.2 VVT vs M112 / M113
- 1.2 Dualjet and 1.2 VVT vs M264/M254
- 1.2 Dualjet and 1.2 VVT vs M260
- 1.2 Dualjet and 1.2 VVT vs M271
- 1.2 Dualjet and 1.2 VVT vs M272/M273
- 1.2 Dualjet and 1.2 VVT vs M270/M274
- 1.2 Dualjet and 1.2 VVT vs 1.5 VTi-TECH / T-GDI
- 1.2 Dualjet and 1.2 VVT vs MIVEC gasolina
- 1.2 Dualjet and 1.2 VVT vs Mitsubishi PHEV
- 1.2 Dualjet and 1.2 VVT vs 1.6 DIG-T
- 1.2 Dualjet and 1.2 VVT vs 1.5 VC-Turbo e-Power
- 1.2 Dualjet and 1.2 VVT vs 1.2 HR12DE and 1.2 DIG-S (HR12DDR)
- 1.2 Dualjet and 1.2 VVT vs 2.0 MR20DE / 2.5 QR25DE
- 1.2 Dualjet and 1.2 VVT vs 1.6 16v HR16DE / H4M
- 1.2 Dualjet and 1.2 VVT vs 1.0/1.2/1.4 Ecotec
- 1.2 Dualjet and 1.2 VVT vs 1.4 Turbo
- 1.2 Dualjet and 1.2 VVT vs 1.6 and 1.8 Ecotec 16v
- 1.2 Dualjet and 1.2 VVT vs Porsche V8 and V6 (Cayenne and Panamera)
- 1.2 Dualjet and 1.2 VVT vs 1.4 and 1.6 TU3/TU5
- 1.2 Dualjet and 1.2 VVT vs 1.4/1.6 VTi
- 1.2 Dualjet and 1.2 VVT vs 1.6 THP
- 1.2 Dualjet and 1.2 VVT vs 2.0 and 2.2 16v EW10/EW12
- 1.2 Dualjet and 1.2 VVT vs 0.9 TCe
- 1.2 Dualjet and 1.2 VVT vs 1.0 SCe (B4D)
- 1.2 Dualjet and 1.2 VVT vs 1.0 TCe / SCe
- 1.2 Dualjet and 1.2 VVT vs 1.4 and 1.6 8v
- 1.2 Dualjet and 1.2 VVT vs 1.2 16v
- 1.2 Dualjet and 1.2 VVT vs E-Tech Híbrido
- 1.2 Dualjet and 1.2 VVT vs 2.0 16v F4R and F4RT
- 1.2 Dualjet and 1.2 VVT vs 1.4 and 1.6 16v
- 1.2 Dualjet and 1.2 VVT vs 1.0 and 1.4 Boosterjet
- 1.2 Dualjet and 1.2 VVT vs 1.5 K15B (Jimny)
- 1.2 Dualjet and 1.2 VVT vs 1.3, 1.5 and 1.6 gasolina (serie M)
- 1.2 Dualjet and 1.2 VVT vs 1.0 VVT-i
- 1.2 Dualjet and 1.2 VVT vs 1.2 Turbo
- 1.2 Dualjet and 1.2 VVT vs 1.33 Dual VVT-i
- 1.2 Dualjet and 1.2 VVT vs 1.4, 1.6 and 1.8 VVT-i
- 1.2 Dualjet and 1.2 VVT vs 1.5 Hybrid
- 1.2 Dualjet and 1.2 VVT vs 1.6 Dual VVT-i
- 1.2 Dualjet and 1.2 VVT vs 1.8 Hybrid
- 1.2 Dualjet and 1.2 VVT vs 2.0 and 2.4 VVT-i
- 1.2 Dualjet and 1.2 VVT vs 2.0 and 2.5 Hybrid
- 1.2 Dualjet and 1.2 VVT vs Volvo 5 cilindros gasolina
- 1.2 Dualjet and 1.2 VVT vs Drive-E gasolina
- 1.2 Dualjet and 1.2 VVT vs 1.0 MPI
- 1.2 Dualjet and 1.2 VVT vs 1.2 12V
- 1.2 Dualjet and 1.2 VVT vs 1.4 16v and 1.6 MPI/FSI
- 1.2 Dualjet and 1.2 VVT vs 1.8 T 20v
- 1.2 Dualjet and 1.2 VVT vs 2.0 FSI
- 1.2 Dualjet and 1.2 VVT vs VW 2.0 TFSI EA113
Compare other engines
Sources
Every fact on this page links to its source. If you find an error, let us know.
- Guía de compra del MG TF de segunda manoDiariomotor · Motoring press · published 7 November 2023 · consulted 8 October 2026 · in Spanish
- MG TF (2002)Wikipedia (en) · Other source · consulted 8 October 2026
- Choosing the correct K Series Head Gasket KitDMGRS · Technical documentation · consulted 8 October 2026
- Cooling and heating (K-Series: ZR, ZS, ZT, MGF, TF)MGOC Spares · Technical documentation · consulted 8 October 2026
- Suzuki motor KWikipedia · Other source · consulted 27 September 2026 · in Spanish
- Suzuki K engineWikipedia · Other source · consulted 27 September 2026
- Suzuki Swift (NZ) – Typische Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
- Suzuki Splash (2008–2014) – Bekannte Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
- Suzuki Ignis (MF, ab 2016) – Bekannte Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
- Rover K-series engineWikipedia (en) · Other source · consulted 8 October 2026
- Suzuki Ignis : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
- Suzuki Swift 2 : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
- MG ZR ZS ZT & Modern Engine & FuelMGOC Spares · Technical documentation · consulted 8 October 2026
- MGF & TF Headgasket Repair KitsMGOC Spares · Technical documentation · consulted 8 October 2026