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1.0 T3 and 1.3 T4 FireFly Turbo vs 1.5 VC-Turbo e-Power: which engine is more reliable?

According to our risk index, the 1.0 T3 and 1.3 T4 FireFly Turbo carries less risk than the 1.5 VC-Turbo e-Power: 18/100 (low risk) versus 36/100 (moderate risk). The 1.0 T3 and 1.3 T4 FireFly Turbo has no documented serious faults; the 1.5 VC-Turbo e-Power has 3 documented serious faults, the main one being «Safe mode due to battery controller calibration (loss of propulsion)».

Risk index

1.0 T3 and 1.3 T4 FireFly Turbo

18

Low risk · 0 serious faults

Lower risk

Risk index

1.5 VC-Turbo e-Power

36

Moderate risk · 3 serious faults

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

14 sourcesHow we work

Is the 1.0 T3 and 1.3 T4 FireFly Turbo reliable?

The FireFly turbo 1.0 T3 and 1.3 T4 show no systemic fault in open sources; there are only isolated cases of jerking with replacement of the MultiAir block on the 1.0 and one engine failure on a 1.3. The evidence is thin and is not a guarantee of reliability.[1][2][3]

See the 2 of the 1.0 T3 and 1.3 T4 FireFly Turbo faults

Is the 1.5 VC-Turbo e-Power reliable?

There is still little reliability data: the three-cylinder 1.5 VC-Turbo only generates electricity and no mechanical faults are known in Europe. The documented weak points are in the e-Power electronics: battery campaigns and isolated cases of immobilisation.[4][5][6]

See the 4 of the 1.5 VC-Turbo e-Power faults

Side-by-side comparison

Comparison of 1.0 T3 and 1.3 T4 FireFly Turbo and 1.5 VC-Turbo e-Power
1.0 T3 and 1.3 T4 FireFly Turbo1.5 VC-Turbo e-Power
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,332 cm³1,497 cm³
TimingChain—
Power100–180 hp190–213 hp
Productionsince 2018[7]since 2022[8][9][10][11]
Reliability
Risk index (what is it?)18Low risk36Moderate risk
Documented faults24
Of high or critical severity03
Worst severityMedium severityHigh severity
Main faults
  1. Medium severity: Oil consumption and premature turbo wear on the 1.0 T3 and 1.3 T4
  2. Medium severity: Jerking and MultiAir block failures on the 1.0 T3
  1. High severity: Safe mode due to battery controller calibration (loss of propulsion)
  2. High severity: Fuel line that slips out of its clip and may leak
  3. Medium severity: e-Power warning and limited mode due to incorrect state-of-charge reading
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • 1.3 GSE T4 Turbo 150-180 hp (FireFly, since 2018)[1][12]
  • 1.3 GSE T4 Turbo plug-in hybrid 4xe (130-180 hp from the petrol engine, since 2021)[13][14]
None
With cautionVersions to be cautious about
  • 1.0 GSE T3 Turbo 100-120 hp (FireFly, since 2018)[1][2]
  • 1.5 VC-Turbo e-Power 190 hp (Qashqai J12, since 2022)[4][5][6]
  • 1.5 VC-Turbo e-Power 204 hp (X-Trail T33, front-wheel drive, since 2022)[4][8]
  • 1.5 VC-Turbo e-Power e-4ORCE 213 hp (X-Trail T33, all-wheel drive, since 2022)[8][10]
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

1.0 T3 and 1.3 T4 FireFly Turbo

1.5 VC-Turbo e-Power

Other comparisons

With the 1.0 T3 and 1.3 T4 FireFly Turbo

With the 1.5 VC-Turbo e-Power

Compare other engines

That is the comparison you are viewing: change one of the two engines.

Sources

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

  1. Fiabilité Jeep: témoignages de propriétairesfiches-auto.fr · Other source · consulted 29 October 2026 · in French
  2. Fiabilité Fiat: témoignages de propriétairesfiches-auto.fr · Other source · consulted 29 October 2026 · in French
  3. Broken chain in Firefly 1.0 engineFiat Forum · Owners' forum · consulted 30 October 2026
  4. Fiabilidad y averías del Nissan Qashqai 3 (2021)fiches-auto.fr · Motoring press · consulted 29 October 2026 · in French
  5. Nissan Qashqai: richiamo per la batteria del sistema ibridoalVolante · Motoring press · published 4 August 2026 · consulted 29 October 2026 · in Italian
  6. Nissanowski SUV z usterką systemu zarządzania akumulatoremAutokatalog.pl · Motoring press · published 2025 · consulted 29 October 2026 · in another language
  7. Fiat Global Small EngineWikipedia (inglés) · Other source · consulted 29 October 2026
  8. Nissan X-Trail - WikipediaWikipedia · Other source · consulted 29 October 2026
  9. Nissan KR engine - WikipediaWikipedia · Other source · consulted 29 October 2026
  10. Nissan X-Trail (T33) - Wikipedia (versión alemana)Wikipedia · Other source · consulted 29 October 2026 · in German
  11. Nissan z novim Qashqaijem uvaja e-Power v EvropiRTV Slovenija · General press · published 19 February 2021 · consulted 29 October 2026 · in another language
  12. Problemas Jeep CompassTotal Renting · Other source · consulted 29 October 2026 · in Spanish
  13. Jeep Renegade Problemecarwiki.de · Other source · consulted 29 October 2026 · in German
  14. Jeep Renegade 4xe plug-in hybrid reliability and safetyDriving Electric · Motoring press · consulted 29 October 2026