1.0 SCe (B4D) 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 1.0 SCe (B4D): 6/100 versus 23/100 (both low risk). The 1.0 SCe (B4D) has no documented serious faults; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

1.0 SCe (B4D)

Low risk · 0 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 27 September 202616 sources How we work

Is the 1.0 SCe (B4D) reliable?

The 1.0 SCe (B4D) is a simple, low-power (70-75 hp) naturally aspirated three-cylinder engine, with no serious or systemic faults documented. Its most cited issues are a clutch that can slip or judder when cold and, more occasionally on the Dacia Sandero II, higher-than-normal oil consumption; there is no pattern of faults in the chain-driven timing.^[1][2][3]

See the 4 of the 1.0 SCe (B4D) 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.^{[4][5][6][7][8]}

See the 4 of the 1.0 and 1.4 Boosterjet faults

Side-by-side comparison

Comparison of 1.0 SCe (B4D) and 1.0 and 1.4 Boosterjet
Item	1.0 SCe (B4D)	1.0 and 1.4 Boosterjet
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	999 cm³	—
Timing	Chain	Chain
Power	70–75 hp	110–140 hp
Production	2014–2024^[9][10]	since 2015^{[4][11][12][13]}
Reliability
Risk index (what is it?)	23Low risk	6Low risk
Documented faults	4	4
Of high or critical severity	0	0
Worst severity	Medium severity	Low severity
Main faults	Medium severity: Clutch that slips or judders, especially when cold Medium severity: Jerking, rough idle or warning light from sensors and ignition coils Low severity: Higher-than-normal oil consumption (especially on the Dacia Sandero II)	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	None	1.0 Boosterjet 110-112 hp (K10C, three-cylinder, 2015-present)^{[5][6][14][15]} 1.4 Boosterjet 140 hp (K14C, non-hybrid, 2015-2020 in Europe)^[5][6][16] 1.4 Boosterjet Mild Hybrid 129 hp (K14D, 48V SHVS, since 2020)^[12][13]
With cautionVersions to be cautious about	1.0 SCe 70/75 (B4D, 2014-2024)^[1][2][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

1.0 SCe (B4D)

1.0 and 1.4 Boosterjet

See the 12 models with the 1.0 and 1.4 Boosterjet

Other comparisons

With the 1.0 SCe (B4D)

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.

Fiabilité et pannes de la Dacia Sandero 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Logan 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes de la Renault Twingo 3Fiches-auto.fr · Motoring press · consulted 27 September 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
List of Renault enginesWikipedia (inglés) · Other source · consulted 27 September 2026
Renault TwingoWikipedia (inglés) · Other source · consulted 27 September 2026
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