1.2 8v Fire vs 1.5 K15B (Jimny): which engine is more reliable?

According to our risk index, the 1.5 K15B (Jimny) carries less risk than the 1.2 8v Fire: 14/100 versus 20/100 (both low risk). The 1.2 8v Fire has no documented serious faults; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

1.2 8v Fire

Low risk · 0 serious faults

Risk index

1.5 K15B (Jimny)

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 202616 sources How 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 1.5 K15B (Jimny) reliable?

The 1.5 K15B in the Suzuki Jimny is a 102 hp naturally aspirated four-cylinder with a timing chain, simple and with no documented faults of its own. The only thing recorded in Europe is a 2018-2020 recall for the fuel pump, precautionary and with a definitive remedy.^[7][8][9]

See the of the 1.5 K15B (Jimny) fault

Side-by-side comparison

Comparison of 1.2 8v Fire and 1.5 K15B (Jimny)
Item	1.2 8v Fire	1.5 K15B (Jimny)
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,242 cm³	1,462 cm³
Timing	Timing belt (dry)	Chain
Power	60–69 hp	102 hp
Production	1999–2020^{[10][11][12][13]}	since 2018^[14][15][16]
Reliability
Risk index (what is it?)	20Low risk	14Low risk
Documented faults	4	1
Of high or critical severity	0	0
Worst severity	Medium severity	Medium severity
Main faults	Medium severity: Sensor failures: lambda sensor and crankshaft position sensor (TDC) Low severity: Oil consumption or leak, in one case from the rocker cover gasket Low severity: Faulty ignition coil (misfire, engine warning light)	Medium severity: Fuel pump with resin impeller that swells (recall)
Most expensive documented repair	No reliable data	No 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]	1.5 K15B 102 hp (Jimny IV, 2018-present)^[7][8][9]
With cautionVersions to be cautious about	None	None
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

1.2 8v Fire

See the 7 models with the 1.2 8v Fire

1.5 K15B (Jimny)

Suzuki Jimny IV

Other comparisons

With the 1.2 8v Fire

With the 1.5 K15B (Jimny)

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 et pannes de la Fiat Panda (2003-2012)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes de la Fiat Panda (depuis 2012)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes de la Fiat 500Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes de la Fiat Punto (Grande Punto / Punto Evo / Punto)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiat Panda III (seit 2011) – Probleme & SchwachstellenGebrauchtwagenberater.de · Motoring press · published 21 January 2023 · consulted 27 September 2026 · in German
Fiat 500 (ab 2007) – alle bekannten Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · published 24 November 2023 · consulted 27 September 2026 · in German
Problemas Suzuki JimnyTotalrenting · General press · consulted 30 October 2026 · in Spanish
Suzuki Jimny: problemas comunes y llamadas a revisióncar-recalls.eu · Other source · consulted 30 October 2026 · in Spanish
Suzuki Jimny Problemecarwiki.de · General press · consulted 30 October 2026 · in German
Fiat FIRE engineWikipedia (inglés) · Other source · consulted 27 September 2026
Fiat 500 (2007)Wikipedia (inglés) · Other source · consulted 27 September 2026
Fiat Grande PuntoWikipedia (inglés) · Other source · consulted 27 September 2026
Ford KaWikipedia (inglés) · Other source · consulted 27 September 2026
Suzuki K engineWikipedia · Other source · consulted 30 October 2026
Suzuki motor KWikipedia · Other source · consulted 30 October 2026 · in Spanish
Suzuki JimnyWikipedia · Other source · consulted 30 October 2026 · in Spanish