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2.0 16v F4R and F4RT 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 2.0 16v F4R and F4RT: 6/100 (low risk) versus 25/100 (moderate risk). The 2.0 16v F4R and F4RT has 1 documented serious fault, the main one being «Timing belt failure due to overdue maintenance»; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

2.0 16v F4R and F4RT

25

Moderate risk · 1 serious fault

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

16 sourcesHow we work

Is the 2.0 16v F4R and F4RT reliable?

In the sources we consulted, the 2.0-litre F4R and F4RT show no engine-destroying design faults, but the timing belt must be changed on time, and the coils (RS) and the variable valve timing pulley appear as weak points. We have found no reliable sources on oil consumption or big-end bearings.[1][2][3][4]

See the 3 of the 2.0 16v F4R and F4RT 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 2.0 16v F4R and F4RT and 1.0 and 1.4 Boosterjet
2.0 16v F4R and F4RT1.0 and 1.4 Boosterjet
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,998 cm³—
TimingTiming belt (dry)Chain
Power135–250 hp110–140 hp
Productionsince 2000[10]since 2015[5][11][12][13]
Reliability
Risk index (what is it?)25Moderate risk6Low risk
Documented faults34
Of high or critical severity10
Worst severityCritical severityLow severity
Main faults
  1. Critical severity: Timing belt failure due to overdue maintenance
  2. Medium severity: Faulty camshaft variable valve timing pulley
  3. Medium severity: F4RT ignition coil failure
  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
  • 2.0 16v naturally aspirated 135-197 hp (F4R)[1][2]
  • 2.0 turbo 165-250 hp (F4RT)[3][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

2.0 16v F4R and F4RT

1.0 and 1.4 Boosterjet

See the 12 models with the 1.0 and 1.4 Boosterjet

Other comparisons

With the 2.0 16v F4R and F4RT

With the 1.0 and 1.4 Boosterjet

Compare other engines

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Sources

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

  1. Pannes Renault Mégane 2 (testimonios por motorización)fiches-auto.fr · Other source · consulted 5 October 2026 · in French
  2. Fiabilité occasion Renault Mégane II (2002-2009)CarVerif · Other source · consulted 5 October 2026 · in French
  3. Renaultsport Megane checkpointsevo · Motoring press · published 20 November 2008 · consulted 5 October 2026
  4. RenaultSport Megane 225 buying guide, history and reviewOctane · Motoring press · published 7 February 2025 · consulted 5 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. Moteur F Renault (F4R y F4RT)Wikipedia (fr) · Other source · consulted 5 October 2026 · in French
  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