1.8 TCe 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 1.8 TCe: 6/100 (low risk) versus 32/100 (moderate risk). The 1.8 TCe has 2 documented serious faults, the main one being «A110 oil pressure solenoid valve sticking in 2018–2019 cars»; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

1.8 TCe

Moderate risk · 2 serious faults

Risk index

1.0 and 1.4 Boosterjet

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

Reviewed on 31 October 202617 sources How we work

Is the 1.8 TCe reliable?

The 1.8 TCe (M5P) in the Alpine A110 and the Mégane R.S. IV has no documented endemic faults. What has been published are recalls for the A110: the oil pressure solenoid valve (2019) and the fuel pump (2021 and 2023). We have found no recalls or complaints about this engine in the Mégane R.S.^[1][2][3][4]

See the 2 of the 1.8 TCe 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 1.8 TCe and 1.0 and 1.4 Boosterjet
Item	1.8 TCe	1.0 and 1.4 Boosterjet
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,798 cm³	—
Timing	—	Chain
Power	252–350 hp	110–140 hp
Production	2017–2026^[4][10][11]	since 2015^{[5][12][13][14]}
Reliability
Risk index (what is it?)	32Moderate risk	6Low risk
Documented faults	2	4
Of high or critical severity	2	0
Worst severity	High severity	Low severity
Main faults	High severity: A110 oil pressure solenoid valve sticking in 2018–2019 cars High severity: A110 fuel pump that can leave the car unable to start when hot	Low severity: Timing chain: no documented pattern of failures Low severity: Oil consumption: no documented pattern Low severity: Direct injection and fuel pump: no documented faults or recalls
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	1.8 TCe 280–300 hp (M5P, Mégane R.S. IV, 2018–2023)^[1][3][4]	1.0 Boosterjet 110-112 hp (K10C, three-cylinder, 2015-present)^{[6][7][15][16]} 1.4 Boosterjet 140 hp (K14C, non-hybrid, 2015-2020 in Europe)^[6][7][17] 1.4 Boosterjet Mild Hybrid 129 hp (K14D, 48V SHVS, since 2020)^[13][14]
With cautionVersions to be cautious about	1.8 TCe 252–350 hp (M5P, Alpine A110, 2017–2026)^[1][3]	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

1.8 TCe

1.0 and 1.4 Boosterjet

See the 12 models with the 1.0 and 1.4 Boosterjet

Other comparisons

With the 1.8 TCe

With the 1.0 and 1.4 Boosterjet

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Sources

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

Rappels Alpine A110 (2019). Risque de casse moteurL'argus · Motoring press · published 28 August 2019 · consulted 31 October 2026 · in French
Rappel Alpine A110. La pompe à essence de 2 849 exemplaires remplacéeL'argus · Motoring press · published 7 September 2021 · consulted 31 October 2026 · in French
Alpine A110. Un nouveau rappel pour remplacer des pompes à essenceL'argus · Motoring press · published 25 October 2023 · consulted 31 October 2026 · in French
Renault Mégane IVWikipedia (fr) · Other source · consulted 31 October 2026 · in French
Suzuki K engineWikipedia · Other source · consulted 27 September 2026
Gebrauchtwagen-Check: Grundsätzlich gut: Der Suzuki Vitara beim TÜVVolksstimme (dpa) · General press · published January 2026 · consulted 27 September 2026 · in German
Suzuki Swift als Gebrauchtwagen: Diese Punkte beanstandet der TÜV häufigT-Online · General press · published October 2025 · consulted 27 September 2026 · in German
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
Test complet Suzuki VitaraFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Alpine A110 (2017)Wikipedia (en) · Other source · consulted 31 October 2026
Alpine A110 (2017)Wikipedia (fr) · Other source · consulted 31 October 2026 · in French
Suzuki motor KWikipedia · Other source · consulted 27 September 2026 · in Spanish
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
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
Suzuki Vitara : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Suzuki Swift 3 : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Prueba Suzuki Swift Sport 1.4 Boosterjet 140 CVActualidad Motor · Motoring press · published 16 May 2018 · consulted 27 September 2026 · in Spanish