The 2.5-liter naturally aspirated Subaru FB25 B engine was produced in Japan from 2010 to 2020 and installed in the company's mid-size models such as Legacy, Outback, and Forester crossover. Since 2018, this engine has been gradually replaced by its modification with direct fuel injection. The FB line also includes the following engines: FB16B, FB16F, FB20B, FB20D, FB20X, and FB25D.
| Exact capacity | 2498 cm³ |
| Power system | distributed injection |
| Engine power | 172 HP |
| Torque | 236 nm |
| Engine block | aluminum H4 |
| Block head | aluminum 16v |
| Cylinder diameter | 94 mm |
| Piston stroke. | 90 mm |
| Compression ratio | 10.0 - 10.3 |
| Engine features | DOHC |
| Hydraulic compensator. | there is no |
| Timing drive | chain |
| Timing phase adjuster | Dual AVCS |
| Turbocharging | there is no |
| What oils to use | 4.8 liters 0W-20 |
| Fuel type | 95 |
| Environmental class | EURO 5/6 |
| Approximate life expectancy | 250 000 HP |
| City | 10.1 litry |
| Route | 6.2 litry |
| Mixed | 7.7 litry |
The total weight of the FB25B engine assembly is 130 kg. The engine number FB25B is located at the junction of the block and the gearbox. Unlike the 2.0-liter units, this engine is not known for high oil consumption. There are complaints about oil consumption, but they are relatively few, often caused by ring sticking. The engine is also sensitive to the quality of the oil, as the variable valve timing solenoids start to rattle immediately. There is also a service bulletin for fixing leaks in the camshaft bearings. Additionally, every 100,000 km, you can expect an expensive procedure of valve clearance adjustment.
| Forester 3 (SH) | 2010 - 2013 |
| Forester 4 (SJ) | 2012 - 2018 |
| Legacy 5 (BM) | 2012 - 2014 |
| Legacy 6 (BN) | 2014 - 2019 |
| Outback 4 (BR) | 2012 - 2014 |
| Outback 5 (BS) | 2014 - 2020 |
| Exiga 1 (YA) | 2012 - 2015 |
The 1.8-liter Subaru CB18 engine was first introduced by the company at the automotive fair in 2019 and is currently only used in two of its models: the second-generation Levorg station wagon and the fifth-generation Forester. This turbocharged system stands out for its ability to operate in a particularly economical Lean Burn mode. There is only one engine in the CB line.
The 2.5-liter gasoline engine Subaru EJ25 D was produced by the company from 1994 to 1999 and was used in practically all mass-produced models of the conglomerate from the 90s. This engine became the basis for the creation of a whole series of units, including those with turbocharging. The EJ25 line also includes engines with the following codes: EJ251, EJ253, EJ254, EJ255, and EJ257.
The 2.5-liter Subaru EJ251 engine was produced at the Japanese factory from 1998 to 2004 and installed in most models of the company from that period: Impreza, Legacy, and Forester. For markets with strict environmental requirements, a version with the EJ252 index was offered. The EJ25 line also includes engines: EJ25D, EJ253, EJ254, EJ255, and EJ257.
The 3.0-liter gasoline engine Subaru EZ30 D was produced by the company from 2000 to 2004 and was exclusively installed in the third generation of the Legacy model and on the base of the Outback wagon. This engine quickly gave way to the updated version with the index EZ30R. The EZ line also includes engines: EZ30R and EZ36D.
The 4.2-liter Audi BTR or Q7 4.2 TDI diesel engine was produced from 2007 to 2009 and only installed in the first generation of the popular Q7 SUV before its facelift. The equivalent diesel engine under the hoods of the A8 sedans in the D3 body has its own index, BVN. The following designations also belong to the EA898 series: - AKF, - ASE, - CKDA, and - CCGA.
The 2.5-liter turbocharged diesel engine Hyundai D4BF was installed by the company from 1991 to 2004 and used in popular microbuses H1, Starex, and Grace, as well as in off-road vehicles Galloper. This engine was actually one of the modifications of the Mitsubishi turbodiesel 4D56. This family also includes diesel engines: D4BA, D4BB, and D4BH.