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1.4 / 1.6 16v E-TEC II 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 1.4 / 1.6 16v E-TEC II: 6/100 versus 19/100 (both low risk). The 1.4 / 1.6 16v E-TEC II has no documented serious faults; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

1.4 / 1.6 16v E-TEC II

19

Low risk · 0 serious faults

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

22 sourcesHow we work

Is the 1.4 / 1.6 16v E-TEC II reliable?

The 1.4 and 1.6 16v GM Daewoo E-TEC II (first-generation Lacetti/Optra and Aveo) have a timing belt and, according to the Polish press, a moderate fault record. Documented issues are faulty valves in the first units (2004-2005), lambda sensor faults and a few cases of oil leaks or oil consumption.[1][2][3]

See the 3 of the 1.4 / 1.6 16v E-TEC II 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 1.4 / 1.6 16v E-TEC II and 1.0 and 1.4 Boosterjet
1.4 / 1.6 16v E-TEC II1.0 and 1.4 Boosterjet
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingTiming belt (dry)Chain
Power83–109 hp110–140 hp
Production2004–2011[9][10][11][12][13]since 2015[4][14][15][16]
Reliability
Risk index (what is it?)19Low risk6Low risk
Documented faults34
Of high or critical severity00
Worst severityMedium severityLow severity
Main faults
  1. Medium severity: Faulty valves and ignition faults in the first units (2004-2005)
  2. Low severity: Lambda sensor faults
  3. Low severity: Oil consumption and oil leaks
  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 versions
  • 1.4 and 1.5 8v SOHC (Aveo, 2005-2011)[3][13]
  • 1.5 and 1.6 16v DOHC 100-106 hp (A15DMS/A16DMS, Daewoo Lanos and Nubira, 1997-2008)[17][18]
  • 1.0 Boosterjet 110-112 hp (K10C, three-cylinder, 2015-present)[5][6][19][20]
  • 1.4 Boosterjet 140 hp (K14C, non-hybrid, 2015-2020 in Europe)[5][6][21]
  • 1.4 Boosterjet Mild Hybrid 129 hp (K14D, 48V SHVS, since 2020)[15][16]
With cautionVersions to be cautious about
  • 1.4 16v DOHC 95-101 hp (F14D4/L95, 2004-2011)[1][2][13]
  • 1.6 16v DOHC 103-109 hp (L91/LXT, 2004-2011)[2][13][22]
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

Other comparisons

With the 1.4 / 1.6 16v E-TEC II

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. Chevrolet Lacetti 1.4 16V - Niełatwo zdobyć zaufanieAuto Świat · Motoring press · published 19 November 2007 · consulted 2 November 2026 · in another language
  2. Bez fajerwerków - Chevrolet Lacetti (2003-2010)AutoCentrum.pl · Motoring press · published 7 April 2012 · consulted 2 November 2026 · in another language
  3. Czy warto kupić: używany Chevrolet Aveo (od 2002 do 2011)AutoCentrum.pl · Motoring press · published 5 March 2013 · consulted 2 November 2026 · in another language
  4. Suzuki K engineWikipedia · Other source · consulted 27 September 2026
  5. Gebrauchtwagen-Check: Grundsätzlich gut: Der Suzuki Vitara beim TÜVVolksstimme (dpa) · General press · published January 2026 · consulted 27 September 2026 · in German
  6. Suzuki Swift als Gebrauchtwagen: Diese Punkte beanstandet der TÜV häufigT-Online · General press · published October 2025 · consulted 27 September 2026 · in German
  7. 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
  8. Test complet Suzuki VitaraFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  9. GM Family 1 engineWikipedia · Other source · consulted 2 November 2026
  10. Chevrolet LacettiWikipedia · Other source · consulted 2 November 2026
  11. Chevrolet LacettiWikipedia (de) · Other source · consulted 2 November 2026 · in German
  12. Chevrolet Aveo (T200)Wikipedia · Other source · consulted 2 November 2026
  13. Używany Chevrolet Aveo T200/T250 - typowe awarie i problemyWP Autokult · Motoring press · published 28 January 2012 · consulted 2 November 2026 · in another language
  14. Suzuki motor KWikipedia · Other source · consulted 27 September 2026 · in Spanish
  15. 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
  16. 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
  17. Daewoo Nubira: zwawa, pakowna i taniaAuto Świat · Motoring press · published 20 February 2006 · consulted 2 November 2026 · in another language
  18. Gdy koszty grają rolę - Daewoo/FSO Lanos (1997-2008)AutoCentrum.pl · Motoring press · published 4 January 2012 · consulted 2 November 2026 · in another language
  19. Suzuki Vitara : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  20. Suzuki Swift 3 : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  21. Prueba Suzuki Swift Sport 1.4 Boosterjet 140 CVActualidad Motor · Motoring press · published 16 May 2018 · consulted 27 September 2026 · in Spanish
  22. W pierwszych silnikach 1,6 l przecierały się zawory (Chevrolet Lacetti)AutoCentrum.pl (usterki) · Owners' forum · consulted 2 November 2026 · in another language