
Several car manufacturers utilize boxer engines, but Subaru and Porsche are the most prominent. A boxer engine, where pistons move horizontally opposite each other like a boxer's fists, offers a lower center of gravity for better handling. Subaru equips nearly its entire lineup—including the Outback, Forester, Crosstrek, WRX, and BRZ—with these engines. Porsche famously uses them in the rear of its 911 sports car and the mid-engine Cayman/Boxster models. Historically, models like the Chevrolet Corvair and some Alfa Romeos also featured this design.
| Car Manufacturer | Model Examples | Engine Configuration | Notable Characteristics |
|---|---|---|---|
| Subaru | Outback, Forester, WRX, BRZ | 2.0L, 2.4L, 2.5L Flat-4 | Standard Symmetrical All-Wheel Drive, known for durability and balance. |
| Porsche | 911, 718 Cayman, 718 Boxster | 3.0L, 3.4L, 4.0L Flat-6 | Rear-engine (911) or mid-engine layout; iconic for high-revving performance. |
| Porsche | 718 Cayman/Boxster (base) | 2.0L Flat-4 Turbo | Turbocharged entry-level engine for the 718 series. |
| Subaru | Legacy, Impreza | 2.5L Flat-4 | Focus on fuel efficiency and smooth operation for daily driving. |
| Subaru | Ascent | 2.4L Turbo Flat-4 | Turbocharged for higher torque, suited for a large three-row SUV. |
The primary advantage is the enhanced stability from the low-mounted engine. This is a key reason why Subaru vehicles are praised for their confident grip on paved and unpaved roads. For Porsche, this layout is fundamental to the 911's unique rear-weight bias and handling character. While other manufacturers have largely moved to more conventional inline or V-type engines for cost and packaging reasons, Subaru and Porsche continue to champion the boxer for its distinct driving dynamics.

If you're looking for that flat-engine rumble and great cornering feel, you've got two main players. Subaru puts them in everything from the practical Outback to the wild WRX STI. Porsche is the other big one, with the legendary 911 and the mid-engine Cayman. It's a special kind of engine that makes those cars handle like they're on rails. You really feel the difference compared to a regular car.


