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 2.0-liter Subaru EJ20 E gasoline engine was produced by the company from 1989 to 2011 and installed in the most popular models such as Impreza and Legacy, across several generations. The engine was available in versions for the European and Japanese markets with varying compression ratios. The EJ20 line also includes the following power units: EJ201, EJ202, EJ203, and EJ204.
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 2.0-liter turbo engine Subaru FA20F or FA20DIT was produced from 2012 to 2021 and installed in high-performance versions of well-known company models, such as Forester XT and Impreza WRX. There were many variants of this power unit with power ranging from 250 to 300 HP. The FA line also includes engines: FA20D, FA24F, and FA24D.
The 1.6-liter Subaru FB16B gasoline engine has been produced in a Japanese factory since 2011 and is installed in popular models of the company, such as the Impreza and XV crossover. This power unit is the smallest and least powerful in its family of engines. The FB line also includes the following engines: - FB16F, - FB20B, - FB20D, - FB20X, - FB25B, and - FB25D.
The 1.4-liter turbocharged engine Fiat 198A1000, also known as the 1.4 T-Jet, was produced from 2007 to 2010 and installed in models such as Bravo, Linea, Grande Punto, as well as Lancia Delta and Alfa Romeo MiTo. Unlike its less powerful counterpart, this engine quickly gave way to the MultiAir unit. The FIRE-T series also includes 198A4000.
The 2.7-liter Nissan TD27T diesel engine was produced from 1985 to 2007 and installed in utility vehicles. It is mainly known from the Caravan minibus and the Teranno off-road vehicle. There are four versions of this engine: TD27T1, TD27T2, TD27T3, and TD27T4. The TD series includes engines with the following designations: TD23, TD25, TD27, TD27Ti, TD27ETi, TD42, and TD42T.