Skyactiv-G vs Rover K-Series: which engine is more reliable?
According to our risk index, the Skyactiv-G carries less risk than the Rover K-Series: 25/100 versus 46/100 (both moderate risk). The Skyactiv-G has no documented serious faults; the Rover K-Series has 2 documented serious faults, the main one being «Head gasket failure».
The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated
Is the Skyactiv-G reliable?
The Skyactiv-G is a naturally aspirated petrol engine that the German specialist press consistently describes as reliable, with no documented pattern of serious engine faults in any Mazda model reviewed. Its weak point, shared with almost any direct-injection petrol engine, is carbon build-up in the intake; in addition, 2017-2020 units had recalls for software and for the fuel pump, since fixed by the manufacturer.[1][2][3][4]
See the 5 of the Skyactiv-G faultsIs 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.[5][6][7][8]
See the 3 of the Rover K-Series faultsSide-by-side comparison
| Item | Skyactiv-G | Rover K-Series |
|---|---|---|
| Technical data | ||
| Type | Engine | Engine |
| Fuel | Petrol | Petrol |
| Displacement | — | — |
| Timing | Chain | Timing belt (dry) |
| Power | 75–187 hp | 60–160 hp |
| Production | since 2011[1][9] | 1990–2005[6][10] |
| Reliability | ||
| Risk index (what is it?) | 25Moderate risk | 46Moderate risk |
| Documented faults | 5 | 3 |
| Of high or critical severity | 0 | 2 |
| Worst severity | Medium severity | High 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 Skyactiv-G
- Skyactiv-G vs 1.2 PureTech
- Skyactiv-G vs 1.0 PureTech
- Skyactiv-G vs 1.2 and 1.4 TSI
- Skyactiv-G vs 1.0 TSI / 1.5 TSI
- Skyactiv-G vs 1.2 TCe
- Skyactiv-G vs 1.0 EcoBoost
- Skyactiv-G vs 1.3 TCe
- Skyactiv-G vs 1.6 EcoBoost
- Skyactiv-G vs 2.0 TSI / TFSI
- Skyactiv-G vs Audi 3.0 TFSI V6
- Skyactiv-G vs BMW B38 / B37
- Skyactiv-G vs BMW B48 / B38
- Skyactiv-G vs BMW B58
- Skyactiv-G vs BMW M54
- Skyactiv-G vs BMW N13
- Skyactiv-G vs BMW N20
- Skyactiv-G vs BMW N43/N46
- Skyactiv-G vs BMW N52 / N53
- Skyactiv-G vs BMW N54/N55
- Skyactiv-G vs BMW N62 / N63
- Skyactiv-G vs 1.2 8v Fire
- Skyactiv-G vs 1.4 T-Jet
- Skyactiv-G vs 1.0 T3 and 1.3 T4 FireFly Turbo
- Skyactiv-G vs 0.9 TwinAir and 1.0/1.3 FireFly
- Skyactiv-G vs 1.5 EcoBoost
- Skyactiv-G vs 1.25/1.4/1.6 Ti-VCT
- Skyactiv-G vs 1.2 / 1.4 / 1.8 i-VTEC
- Skyactiv-G vs 1.0 / 1.5 VTEC Turbo
- Skyactiv-G vs 2.0 / 2.4 i-VTEC
- Skyactiv-G vs Honda e:HEV / i-MMD
- Skyactiv-G vs Honda IMA híbrido
- Skyactiv-G vs 1.0 T-GDI
- Skyactiv-G vs 1.6 GDI / T-GDI
- Skyactiv-G vs 1.6 GDi híbrido (Kappa)
- Skyactiv-G vs 1.0 / 1.25 MPi
- Skyactiv-G vs Smartstream 1.6 T-GDi
- Skyactiv-G vs 2.0 / 2.4 GDI and T-GDI (Theta II)
- Skyactiv-G vs 2.0 and 3.0 Ingenium gasolina
- Skyactiv-G vs 2.3 MZR DISI Turbo
- Skyactiv-G vs MZR gasolina
- Skyactiv-G vs M111
- Skyactiv-G vs M112 / M113
- Skyactiv-G vs M264/M254
- Skyactiv-G vs M260
- Skyactiv-G vs M271
- Skyactiv-G vs M272/M273
- Skyactiv-G vs M270/M274
- Skyactiv-G vs 1.5 VTi-TECH / T-GDI
- Skyactiv-G vs MIVEC gasolina
- Skyactiv-G vs Mitsubishi PHEV
- Skyactiv-G vs 1.6 DIG-T
- Skyactiv-G vs 1.5 VC-Turbo e-Power
- Skyactiv-G vs 1.2 HR12DE and 1.2 DIG-S (HR12DDR)
- Skyactiv-G vs 2.0 MR20DE / 2.5 QR25DE
- Skyactiv-G vs 1.6 16v HR16DE / H4M
- Skyactiv-G vs 1.0/1.2/1.4 Ecotec
- Skyactiv-G vs 1.4 Turbo
- Skyactiv-G vs 1.6 and 1.8 Ecotec 16v
- Skyactiv-G vs Porsche V8 and V6 (Cayenne and Panamera)
- Skyactiv-G vs 1.4 and 1.6 TU3/TU5
- Skyactiv-G vs 1.4/1.6 VTi
- Skyactiv-G vs 1.6 THP
- Skyactiv-G vs 2.0 and 2.2 16v EW10/EW12
- Skyactiv-G vs 0.9 TCe
- Skyactiv-G vs 1.0 SCe (B4D)
- Skyactiv-G vs 1.0 TCe / SCe
- Skyactiv-G vs 1.4 and 1.6 8v
- Skyactiv-G vs 1.2 16v
- Skyactiv-G vs E-Tech Híbrido
- Skyactiv-G vs 2.0 16v F4R and F4RT
- Skyactiv-G vs 1.4 and 1.6 16v
- Skyactiv-G vs 1.0 and 1.4 Boosterjet
- Skyactiv-G vs 1.2 Dualjet and 1.2 VVT
- Skyactiv-G vs 1.5 K15B (Jimny)
- Skyactiv-G vs 1.3, 1.5 and 1.6 gasolina (serie M)
- Skyactiv-G vs 1.0 VVT-i
- Skyactiv-G vs 1.2 Turbo
- Skyactiv-G vs 1.33 Dual VVT-i
- Skyactiv-G vs 1.4, 1.6 and 1.8 VVT-i
- Skyactiv-G vs 1.5 Hybrid
- Skyactiv-G vs 1.6 Dual VVT-i
- Skyactiv-G vs 1.8 Hybrid
- Skyactiv-G vs 2.0 and 2.4 VVT-i
- Skyactiv-G vs 2.0 and 2.5 Hybrid
- Skyactiv-G vs Volvo 5 cilindros gasolina
- Skyactiv-G vs Drive-E gasolina
- Skyactiv-G vs 1.0 MPI
- Skyactiv-G vs 1.2 12V
- Skyactiv-G vs 1.4 16v and 1.6 MPI/FSI
- Skyactiv-G vs 1.8 T 20v
- Skyactiv-G vs 2.0 FSI
- Skyactiv-G vs VW 2.0 TFSI EA113
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 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 1.2 Dualjet and 1.2 VVT
- 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
Compare other engines
Sources
Every fact on this page links to its source. If you find an error, let us know.
- SkyactivWikipedia (inglés) · Other source · consulted 27 September 2026
- Mazda 3 (BM/BN, 2013-2019) – Erfahrungen & ProblemeGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- Mazda 6 (GJ, III) – Erfahrungen & ProblemeGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- Mazda CX-5 II (KF) – Erfahrungen & ProblemeGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- 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
- List of Mazda enginesWikipedia (inglés) · Other source · consulted 27 September 2026
- Rover K-series engineWikipedia (en) · Other source · consulted 8 October 2026
- Mazda 2 (DJ) – Erfahrungen & ProblemeGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- Mazda 3 IV (BP) – Erfahrungen & ProblemeGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- 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