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1.2 8v Fire vs 1.2 12V: which engine is more reliable?

According to our risk index, the 1.2 8v Fire carries less risk than the 1.2 12V: 20/100 (low risk) versus 57/100 (high risk). The 1.2 8v Fire has no documented serious faults; the 1.2 12V has 2 documented serious faults, the main one being «Timing chain stretch and tensioner wear».

Risk index

1.2 8v Fire

20

Low risk · 0 serious faults

Lower risk

Risk index

1.2 12V

57

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

19 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 1.2 12V reliable?

The 1.2 12V is a simple, low-power, naturally aspirated three-cylinder engine (54-70 hp), with two documented design faults: the timing chain tensioner, which can end up destroying the engine, and -on the Volkswagen Polo IV- a catalytic converter too close to the cylinder head that can burn the exhaust valves. Ignition coil failures are also common, and there are isolated cases of oil consumption and vibration.[7][8][9][10][11]

See the 5 of the 1.2 12V faults

Side-by-side comparison

Comparison of 1.2 8v Fire and 1.2 12V
1.2 8v Fire1.2 12V
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,242 cm³1,198 cm³
TimingTiming belt (dry)Chain
Power60–69 hp54–70 hp
Production1999–2020[12][13][14][15]2001–2014[7][16][17]
Reliability
Risk index (what is it?)20Low risk57High 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 stretch and tensioner wear
  2. High severity: Cylinder head and valve damage from exhaust gas backflow (Volkswagen Polo IV)
  3. Medium severity: Higher-than-normal oil consumption
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
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 1.2 12V

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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. VW Polo 4 (9N): Typische Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
  8. Fiabilité et pannes de la Volkswagen Polo 4Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  9. Fiabilité et pannes de la Seat Ibiza (2008-2017)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  10. Seat Ibiza III (2002-2008): Bekannte Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
  11. Fiabilité et pannes de la Seat Ibiza (2002-2008)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  12. Fiat FIRE engineWikipedia (inglés) · Other source · consulted 27 September 2026
  13. Fiat 500 (2007)Wikipedia (inglés) · Other source · consulted 27 September 2026
  14. Fiat Grande PuntoWikipedia (inglés) · Other source · consulted 27 September 2026
  15. Ford KaWikipedia (inglés) · Other source · consulted 27 September 2026
  16. VW EA111Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  17. VW Polo IVWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  18. Fiabilité et pannes de la Volkswagen Polo 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  19. Fiabilité et pannes de la Skoda Fabia 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French