FB25
2.5i 175 hp (FB25, 2015-2021) engine: faults and reliability
What changes in this version
Four-cylinder of 2,498 cc, 129 kW (175 hp) and 235 N·m with a timing chain, only with the Lineartronic gearbox, in the Outback V. German Wikipedia gives the Outback V's 2.5i as running from 2015 to 2018; the years after the 2018 update are not stated in the source.[1][2]
Engine codes of this version: FB25.
Faults of the FB25 engine
The documented engine faults that affect this version and its years, from most to least important.
None of the documented Subaru bóxer faults affect this version. See all Subaru bóxer faults
Cars fitted with the FB25 engine
Open each car to see all its faults with this engine and what to check before buying it.
Subaru
- Subaru Outback V2.5i · 2.0D (hasta 2018)2015–2021[2]
Frequently asked questions
Is the FB25 engine reliable?
Our verdict is “With caution”. None of the European sources consulted rates the FB25 or documents faults specific to it, and English Wikipedia does not list specific European models; the oil consumption of the FB engines documented in the US is not confirmed in Europe, so keep an eye on the oil level.[1][2]
Which cars use the FB25 engine?
Subaru Outback V (2015–2021).[2]
Are you buying a car with the FB25 engine?
We will put you in touch with a partner only if you authorise it in the form.
Do you have a car with this engine? Tell us which faults you have had and at how many kilometres. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- Subaru FB engineWikipedia (en) · Other source · consulted 9 October 2026
- Subaru OutbackWikipedia (de) · Other source · consulted 9 October 2026 · in German