1.0 T3 and 1.3 T4 FireFly Turbo vs 2.0 and 2.2 16v EW10/EW12: which engine is more reliable?

According to our risk index, the 2.0 and 2.2 16v EW10/EW12 carries less risk than the 1.0 T3 and 1.3 T4 FireFly Turbo: 14/100 versus 18/100 (both low risk). The 1.0 T3 and 1.3 T4 FireFly Turbo has no documented serious faults; the 2.0 and 2.2 16v EW10/EW12 has no documented serious faults.

Risk index

1.0 T3 and 1.3 T4 FireFly Turbo

Low risk · 0 serious faults

Risk index

2.0 and 2.2 16v EW10/EW12

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 30 October 202621 sources How 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 2.0 and 2.2 16v EW10/EW12 reliable?

The EW10 (2.0) and EW12 (2.2) are naturally aspirated 16-valve petrol engines with a timing belt, which PSA fitted between 1999 and 2010 to the 206, 307, 406, 407, 607, 807, C4, C5 and C8, among others. According to owners there are no frequent internal failures: the most-cited problems are the ignition coils (the only fault also reported by the press), the exhaust and, on the 2.2, oil consumption.^{[4][5][6][7][8][9][10][11]}

See the of the 2.0 and 2.2 16v EW10/EW12 fault

Side-by-side comparison

Comparison of 1.0 T3 and 1.3 T4 FireFly Turbo and 2.0 and 2.2 16v EW10/EW12
Item	1.0 T3 and 1.3 T4 FireFly Turbo	2.0 and 2.2 16v EW10/EW12
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,332 cm³	—
Timing	Chain	Timing belt (dry)
Power	100–180 hp	135–177 hp
Production	since 2018^[12]	1999–2010^{[4][6][13][14]}
Reliability
Risk index (what is it?)	18Low risk	14Low risk
Documented faults	2	1
Of high or critical severity	0	0
Worst severity	Medium severity	Medium severity
Main faults	Medium severity: Oil consumption and premature turbo wear on the 1.0 T3 and 1.3 T4 Medium severity: Jerking and MultiAir block failures on the 1.0 T3	Medium severity: Faulty ignition coils
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	1.3 GSE T4 Turbo 150-180 hp (FireFly, since 2018)^[1][15] 1.3 GSE T4 Turbo plug-in hybrid 4xe (130-180 hp from the petrol engine, since 2021)^[16][17]	2.0 16v 136 hp (EW10J4, RFN/RFR, 1999-2005)^{[4][5][7][8][18][19]} 2.0 16v VVT 140-143 hp (EW10A, RFJ, 2004-2011)^[9][10][20]
With cautionVersions to be cautious about	1.0 GSE T3 Turbo 100-120 hp (FireFly, since 2018)^[1][2]	2.0 16v VVT 177 hp (EW10J4S, RFK, 2003-2008)^[7][18][20] 2.0 HPi 140 hp direct injection (EW10D, RLZ, 2001-2004)^[8][10] 2.2 16v 158-163 hp (EW12J4, 3FZ/3FY, 1999-2010)^{[8][9][11][14][21]}
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 T3 and 1.3 T4 FireFly Turbo

2.0 and 2.2 16v EW10/EW12

See the 13 models with the 2.0 and 2.2 16v EW10/EW12

Other comparisons

With the 1.0 T3 and 1.3 T4 FireFly Turbo

With the 2.0 and 2.2 16v EW10/EW12

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.

Fiabilité Jeep: témoignages de propriétairesfiches-auto.fr · Other source · consulted 29 October 2026 · in French
Fiabilité Fiat: témoignages de propriétairesfiches-auto.fr · Other source · consulted 29 October 2026 · in French
Broken chain in Firefly 1.0 engineFiat Forum · Owners' forum · consulted 30 October 2026
PSA EW/DW engineWikipedia (inglés) · Other source · consulted 8 October 2026
Peugeot 307 Probleme und SchwachstellenGebrauchtwagenberater.de · Motoring press · published 2 November 2022 · consulted 8 October 2026 · in German
Peugeot 407 problems (reseña de Graham Smith)CarsGuide (Australia) · Motoring press · published 17 March 2015 · consulted 8 October 2026
Tous les problèmes sur Peugeot 307 2001-2008 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Peugeot 406 1995-2004 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Peugeot 407 2004-2010 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Citroën C5 2001-2008 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Citroën C8 2002-2015 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Fiat Global Small EngineWikipedia (inglés) · Other source · consulted 29 October 2026
Peugeot 406Wikipedia (inglés) · Other source · consulted 8 October 2026
Peugeot 307 2.0 16V 140 ch: courroie de distribution (intervalo, tiempo y riesgo)Mecazen · Other source · consulted 8 October 2026 · in French
Problemas Jeep CompassTotal Renting · Other source · consulted 29 October 2026 · in Spanish
Jeep Renegade Problemecarwiki.de · Other source · consulted 29 October 2026 · in German
Jeep Renegade 4xe plug-in hybrid reliability and safetyDriving Electric · Motoring press · consulted 29 October 2026
Tous les problèmes sur Peugeot 206 1998-2006 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Citroën Xsara Picasso 1999-2010 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Citroën C4 2004-2010 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Tous les problèmes sur Peugeot 607 2000-2011 (opiniones por motorización)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French