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1.2 8v Fire vs 1.6 THP: which engine is more reliable?

According to our risk index, the 1.2 8v Fire carries less risk than the 1.6 THP: 20/100 (low risk) versus 64/100 (high risk). The 1.2 8v Fire has no documented serious faults; the 1.6 THP has 2 documented serious faults, the main one being «Timing chain and tensioner stretch (turbo versions, before 2012)».

Risk index

1.2 8v Fire

20

Low risk · 0 serious faults

Lower risk

Risk index

1.6 THP

64

High risk · 2 serious faults

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

17 sourcesHow we work

Is the 1.2 8v Fire reliable?

The 1.2 8v Fire is one of Fiat's simplest and most widespread petrol engines, with more than two decades in production and no serious or systemic faults documented. The sources consulted describe it as robust: its most-cited issues are isolated sensor failures (lambda sensor, crankshaft sensor), the ignition coil and somewhat high oil consumption at higher mileages; there is no pattern of timing belt breakage.[1][2][3][4][5][6]

See the 4 of the 1.2 8v Fire faults

Is the 1.6 THP reliable?

The 1.6 THP turbo and its naturally aspirated sibling, the 1.6 VTi, make up the Prince family, developed together with BMW and also used by MINI: they do not have a reputation for reliability. Turbo versions built before 2012 carry a known problem of timing chain stretch, and the whole block shares a water pump described as fragile; the turbo versions add oil consumption and high-pressure fuel pump failures.[7][8][9][10]

See the 5 of the 1.6 THP faults

Side-by-side comparison

Comparison of 1.2 8v Fire and 1.6 THP
1.2 8v Fire1.6 THP
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,242 cm³1,598 cm³
TimingTiming belt (dry)Chain
Power60–69 hp120–270 hp
Production1999–2020[11][12][13][14]2006–2018[7][15][16]
Reliability
Risk index (what is it?)20Low risk64High risk
Documented faults45
Of high or critical severity02
Worst severityMedium severityCritical severity
Main faults
  1. Medium severity: Sensor failures: lambda sensor and crankshaft position sensor (TDC)
  2. Low severity: Oil consumption or leak, in one case from the rocker cover gasket
  3. Low severity: Faulty ignition coil (misfire, engine warning light)
  1. Critical severity: Timing chain and tensioner stretch (turbo versions, before 2012)
  2. High severity: Fragile water pump and heat exchanger
  3. Medium severity: High-pressure fuel pump (HPFP) failure on the turbo versions
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • 1.2 8v SMPI 60-65 hp (1999-2009)[1]
  • 1.2 8v VVT 69 hp (2007-2020)[2][3][5][6]
None
With cautionVersions to be cautious aboutNone
  • 1.6 VTi 120 / 1.6 16v (EP6/EP6C, N12/N16, naturally aspirated)[10]
  • 1.6 THP medium output (EP6DT/EP6DTS/EP6CDT, N14/N18; 140-190 hp)[8][9][17]
  • 1.6 THP high performance (EP6CDXD/EP6FDTR/EP6CDTR, John Cooper Works N14/N18; 200-270 hp)[8][9][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

Other comparisons

With the 1.2 8v Fire

With the 1.6 THP

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Sources

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

  1. Fiabilité et pannes de la Fiat Panda (2003-2012)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. Fiabilité et pannes de la Fiat Panda (depuis 2012)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  3. Fiabilité et pannes de la Fiat 500Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  4. Fiabilité et pannes de la Fiat Punto (Grande Punto / Punto Evo / Punto)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  5. Fiat Panda III (seit 2011) – Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · published 21 January 2023 · consulted 27 September 2026 · in German
  6. Fiat 500 (ab 2007) – alle bekannten Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · published 24 November 2023 · consulted 27 September 2026 · in German
  7. Prince engineWikipedia (inglés) · Other source · consulted 27 September 2026
  8. Distribution : les moteurs à problèmesFiches-auto.fr · Motoring press · published April 2025 · consulted 27 September 2026 · in French
  9. Moteurs essence qui consomment de l'huileFiches-auto.fr · Motoring press · published April 2024 · consulted 27 September 2026 · in French
  10. Liste des moteurs qui ont des soucis de refroidissementFiches-auto.fr · Motoring press · published April 2025 · consulted 27 September 2026 · in French
  11. Fiat FIRE engineWikipedia (inglés) · Other source · consulted 27 September 2026
  12. Fiat 500 (2007)Wikipedia (inglés) · Other source · consulted 27 September 2026
  13. Fiat Grande PuntoWikipedia (inglés) · Other source · consulted 27 September 2026
  14. Ford KaWikipedia (inglés) · Other source · consulted 27 September 2026
  15. Peugeot 308Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  16. Peugeot RCZWikipedia (inglés) · Other source · consulted 27 September 2026
  17. BMW Recalls Fuel Pumps. Mini Does NotMotoringFile · Motoring press · published 27 October 2010 · consulted 27 September 2026