The company first introduced the 1.8-liter Subaru CB18 engine at the 2019 auto show and so far only puts it on two of its models: the second-generation Levorg station wagon and the fifth Forester. This turbo unit is distinguished by the ability to work in a particularly economical Lean Burn mode.
In 2020, a new 1.8-liter turbo engine debuted on the second generation of the Levorg model. And this is a 4-cylinder boxer unit with direct fuel injection, an aluminum block, an open cooling jacket, a pair of aluminum DOHC heads without hydraulic lifters, a timing chain drive and a proprietary AVCS type variable valve timing system. A small Garrett M12 turbine with a conventional air intercooler is responsible for supercharging.
There is also a rather short crankshaft with thin cheeks, which is installed with desaxage, a modern variable displacement oil pump and piston cooling nozzles. Also, the unit can operate in the economical Lean Burn mode, that is, on a lean mixture.
The CB line includes only one internal combustion engine.
The engine was installed on:
- Subaru Forester 5 (SK) since 2020;
- Subaru Levorg 2 (VN) since 2020;
- Subaru Outback 6 (BT) since 2021.
|Start of production||2020|
|Fuel system||direct injection|
|Power output, hp||177|
|Torque output, Nm||300|
|Cylinder block||aluminum H4|
|Block head||aluminum 16v|
|Cylinder bore, mm||80.6|
|Piston stroke, mm||88|
|Recommended engine oil||0W-16, 0W-20|
|Engine oil capacity, liter||4.3|
|Euro standards||EURO 6|
|Fuel consumption, L/100 km (for Subaru Levorg 2021)
|Engine lifespan, km||~200 000|
Disadvantages of the CB18 engine
- This turbo engine has just appeared and there are no intelligible statistics of malfunctions, so we can only assume potentially problematic areas of this engine: these are thin chains in the timing drive or a variable displacement oil pump, and also the recommended type of lubricant 0W-16, whether the owners will encounter with oil burner.