For 2021 introduced is a larger 2.5-liter version of the venerable horizontally opposed “Boxer” four-cylinder engine into the top trim grades of the Subaru Crosstrek, Sport and Limited.
Available with only the “Lineartronic” continuously variable transmission (automatic) in North America, the new 2.5-liter engine offers 182 horsepower and 176 pound-feet of torque, a significant increase over the standard 2.0-liter engine.
EPA fuel economy ratings are similar to the smaller engine with 27 mpg city, 34 mpg highway and 29 mpg combined – only 1 mpg different. The 2.5-liter engine is rated for regular unleaded fuel and employs an idle-start-stop system to help it achieve better fuel-economy and lower emissions.
Following the airflow, the engine breathes through a snorkel located at the top of the front radiator support. Air flows back into the filter box located at the front passenger side of the engine and then rearward to the throttle-body.
The composite plastic intake manifold then divides the airflow to either side of the flat four-cylinder engine’s two cylinder bays. The engine features full aluminum construction of block and heads. Two cams on each head feature variable timing.
The engine compartment is laid out well for service and maintenance. The engine oil dipstick is located on top right up in front. Also located at the front and for ease of access are the oil filter and fill cap along side both the coolant and windshield washer reservoirs. Brilliant.
Changing your air filter is done at the passenger side front of the engine bay by simply removing two clips, pushing the box open and lifting it out.
The brake fluid reservoir also easy to find and access at the rear fire wall, requires no gymnastics to get to. Other braking components under the hood include the ABS control unit, which typically requires no service or maintenance.
Removal and replacement of the 12-volt battery is simplified by its up-front location and simple two-bolt retaining bar. Just behind it is the main fuse panel which can be accessed by pressing a tab at the rear and front. Inside you will find a small fuse removal tool provided at the fuse block in addition to a few additional fuses stowed in the cover just in-case.
At the front of the engine a single serpentine belt provides for all of the accessories and shows plenty of room for access when it comes time to replace it.
