1.6 EcoBoost 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 1.6 EcoBoost: 14/100 (low risk) versus 59/100 (high risk). The 1.6 EcoBoost has 3 documented serious faults, the main one being «Cracked cylinder head from overheating, with fire risk»; the 1.5 K15B (Jimny) has no documented serious faults.

Risk index

1.6 EcoBoost

High risk · 3 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 202614 sources How we work

Is the 1.6 EcoBoost reliable?

It is a turbocharged direct-injection four-cylinder that Ford used between 2010 and 2018 as a mid-range step across much of its European line-up, and which Volvo sold under its own T3/T4 designations. Its most serious fault is overheating caused by a loss of coolant circulation that can crack the cylinder head and cause a fire: Ford has recalled cars in South Africa and in the US/Canada, although we have not confirmed an equivalent campaign in Spain.^[1][2][3]

See the 4 of the 1.6 EcoBoost 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.^[4][5][6]

See the of the 1.5 K15B (Jimny) fault

Side-by-side comparison

Comparison of 1.6 EcoBoost and 1.5 K15B (Jimny)
Item	1.6 EcoBoost	1.5 K15B (Jimny)
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,596 cm³	1,462 cm³
Timing	Timing belt (dry)	Chain
Power	120–200 hp	102 hp
Production	2010–2019^[1][7]	since 2018^[8][9][10]
Reliability
Risk index (what is it?)	59High risk	14Low risk
Documented faults	4	1
Of high or critical severity	3	0
Worst severity	Critical severity	Medium severity
Main faults	Critical severity: Cracked cylinder head from overheating, with fire risk High severity: Coolant loss from hoses, water pump or expansion tank High severity: Premature turbocharger failure	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	None	1.5 K15B 102 hp (Jimny IV, 2018-present)^[4][5][6]
With cautionVersions to be cautious about	1.6 EcoBoost 120/150/160/182 (Ford, 2010-2019)^[3][11][12] 1.6 EcoBoost ST 182/197/200 (Ford Fiesta ST/ST200, 2013-2017)^[1][13] Volvo T3/T4 1.6 (B4164T3/B4164T/B4164T2, 2010-2018)^[14]	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

1.6 EcoBoost

See the 10 models with the 1.6 EcoBoost

1.5 K15B (Jimny)

Suzuki Jimny IV

Other comparisons

With the 1.6 EcoBoost

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.

Ford EcoBoost engineWikipedia · Other source · consulted 27 September 2026
The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 27 September 2026
Ford KugaWikipedia · Other source · consulted 27 September 2026
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
Volvo S60Wikipedia · 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
Fiabilité et pannes Ford Mondeo 3Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
Fiabilité et pannes Ford S-MaxFiches-auto.fr · Other source · consulted 27 September 2026 · in French
Ford Fiesta STWikipedia · Other source · consulted 27 September 2026
Fiabilité et pannes Volvo S60Fiches-auto.fr · Other source · consulted 27 September 2026 · in French