Every 2026 Subaru WRX is powered by the same engine: a 2.4-liter horizontally-opposed turbocharged direct-injection four-cylinder — what Subaru calls a BOXER engine, and what the industry designation codes as FA24. It produces 271 horsepower and drives all four wheels through Subaru Symmetrical AWD. This engine and drivetrain combination is what distinguishes the WRX from every other turbocharged sport sedan at its price point: it is the only vehicle in the segment with a flat-four BOXER engine and standard AWD delivered simultaneously. For Nassau County buyers considering the WRX, understanding what the FA24 BOXER actually is — and what it delivers in daily driving and performance — is the foundation of the purchase decision.
Bottom Line: The FA24 is a 2.4-liter direct-injection turbocharged flat-four producing 271 HP, standard across all 2026 WRX trims. The BOXER layout lowers center of gravity, balances weight front-to-rear, and gives Subaru’s Symmetrical AWD its most efficient power delivery path. Performance is accessible and usable in daily Nassau County driving, not just track conditions.
- 271 HP from all seven WRX trim levels — the engine does not change across the lineup
- BOXER (horizontally-opposed) layout: cylinders fire outward rather than upward
- Direct injection: fuel delivered directly into the combustion chamber for improved efficiency and power density
- Symmetrical AWD is the natural drivetrain partner for the BOXER’s weight distribution
What Makes the BOXER Engine Different
The BOXER engine’s defining characteristic is its cylinder orientation: the pistons fire horizontally, opposing each other, rather than vertically in a conventional inline or V-arrangement. This is not a stylistic choice — it produces engineering outcomes that affect how the car drives.
Lower center of gravity. A BOXER engine sits lower in the engine bay than a conventional inline or V-4 because the cylinders extend outward rather than upward. This lower mass reduces the car’s center of gravity, which improves handling balance and reduces body roll in cornering. On Nassau County roads — where turns and intersections are taken at real-world speeds, not track speeds — this translates to a car that feels more planted and responsive than a comparably powerful front-engine sedan with a taller engine.
Horizontal balance. When the opposing pistons of a flat-four fire, their opposing motion partially cancels each other’s vibration. This is why a BOXER engine has a characteristic smoothness at idle and under load that a conventional four-cylinder does not have to the same degree. The WRX’s engine note at idle and under power is a product of this mechanical arrangement.
Symmetrical drivetrain compatibility. Subaru’s Symmetrical AWD is designed around the BOXER’s mounting position. The engine, transmission, and front/rear drive shafts share a common centerline — the “symmetrical” in Symmetrical AWD refers to this geometric alignment. This means the power path from the engine to each wheel has equal geometry, which contributes to predictable AWD behavior in wet, snow, and mixed-traction conditions.
Direct Injection Turbo: What DIT Means
The FA24 uses direct injection — fuel is sprayed directly into the combustion chamber, rather than into the intake port. Direct injection allows more precise fuel delivery, higher compression ratios, and better control over combustion timing. Combined with turbocharging, it enables the FA24 to produce 271 HP from a relatively small 2.4-liter displacement.
Turbocharging adds a forced-induction layer: exhaust gases spin a turbine that compresses incoming intake air, allowing more air and fuel to enter the combustion chamber per cycle. The result is substantially more power per unit of displacement than a naturally aspirated engine.
For WRX buyers, this combination means 271 HP that is available across a broad mid-range RPM band — not just at the top of the rev range. In daily Nassau County driving — merging onto the LIE, passing on the Northern State, on-ramp acceleration — the turbo’s mid-range power delivery is available without requiring the driver to rev the engine to its limit.
How the FA24 Performs in Nassau County Driving Conditions
Daily commuting and traffic: The FA24 is cooperative in stop-and-go traffic. The turbocharger’s off-idle behavior is not aggressive or intrusive at low speeds. Symmetrical AWD delivers in rain, which Nassau County sees throughout the year — the WRX does not require a weather mode or cautious input in wet conditions.
Highway merging and passing: The FA24’s mid-range turbo power makes highway passing and merging feel effortless. Requests for power at highway speeds — 50–70 mph — are met with immediate response. This is one of the practical daily-use strengths of the WRX that buyers from comparable cars frequently mention.
Winter performance: Subaru’s certification for LEV3 ULEV125 emissions and the FA24’s DIT system mean the engine performs consistently in cold weather. Symmetrical AWD on the FA24 WRX handles Nassau County snow and ice confidently on all trims.
Spirited driving: On Long Island’s limited opportunities for spirited driving — back roads in Suffolk County, runs up to the Catskills or Hudson Valley — the FA24 rewards. The 271 HP figure is not what enthusiast buyers typically focus on; they focus on how the power is delivered, how the car responds to inputs, and how the drivetrain behaves at the limit. The FA24 BOXER AWD combination is predictable, progressive, and communicative in a way that front-wheel-drive or rear-wheel-drive turbocharged competitors are not.
The FA24 Across WRX Trim Levels
The FA24 engine specification is identical across all seven 2026 WRX trim levels. What changes across trims is what is connected to the engine:
- Transmission: 6-speed manual (Base, Premium, Limited, tS, Series.Yellow) or Sport Lineartronic CVT (Limited SPT, GT)
- Dampers: Passive on Base through Limited; electronic dampers on GT; STI-tuned electronic dampers on tS and Series.Yellow
- Brakes: Conventional on Base through GT; Brembo 6-piston/2-piston on tS and Series.Yellow
- Drive modes: SI-DRIVE on Limited SPT and GT (SPT trims); Drive Mode Select on GT, tS, and Series.Yellow
The engine produces the same 271 HP regardless of which transmission or damper configuration surrounds it. The driving experience varies significantly across trims because of these surrounding components — but the power source is constant.
BOXER vs. Inline-4 Competitors: The Practical Difference
The WRX’s BOXER layout is genuinely unusual in the sport sedan segment. Most turbocharged sport sedans — Honda Civic Si/Type R, Volkswagen Golf GTI, Hyundai Elantra N, Toyota GR Corolla — use inline-four engines, which are less expensive to produce and package more easily. Subaru’s decision to maintain the BOXER layout means the WRX accepts a packaging complexity premium to deliver the center-of-gravity and weight-distribution advantages the flat engine provides.
For buyers comparing the WRX to competitors on paper — HP vs. HP, 0-60 vs. 0-60 — the BOXER advantage doesn’t appear in the spec sheet. It appears in how the car behaves in a corner, how it responds to steering input, and how the AWD system uses the engine’s power under variable traction. These are characteristics best understood on a test drive.
"The FA24 BOXER is the reason the WRX drives the way it does. You can't separate the engine architecture from the car's character — the flat layout, the AWD configuration, the low center of gravity all work together. Buyers who come from conventional turbocharged sedans notice it on the first aggressive corner. The car feels different. More planted. More connected. That's not marketing language — it's the physics of where the engine sits and how it's arranged. The test drive is the argument for the engine more than any spec sheet."
General Manager, Grand Prix Subaru
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Frequently Asked Questions
Is the FA24 engine the same on all 2026 WRX trims? Yes. The 2.4-liter direct-injection turbocharged BOXER engine producing 271 horsepower is standard across all seven WRX trim levels — Base, Premium, Limited, Limited SPT, GT, tS, and Series.Yellow.
What does BOXER mean? BOXER refers to the horizontally-opposed cylinder layout — the pistons fire outward from the center of the engine rather than upward as in a conventional inline or V-configuration engine. The opposing piston motion partially cancels vibration, and the low engine height reduces the car’s center of gravity.
Does direct injection affect fuel economy? Direct injection allows the engine to operate more efficiently across a range of conditions. The 2026 WRX’s EPA ratings vary slightly by transmission — the 6MT and SPT have different efficiency profiles. Confirm current EPA ratings at fueleconomy.gov.
How does the turbocharger behave in cold weather? The FA24 is designed to operate across a full range of temperatures. In cold weather, an oil warm-up period is recommended before demanding high performance — a standard practice for any turbocharged vehicle. Once at operating temperature, the FA24 performs consistently whether it’s January in Nassau County or July.
Drive the FA24 at Grand Prix Subaru
Schedule a WRX test drive at Grand Prix Subaru in Hicksville to experience the FA24 BOXER performance in person. Browse current WRX inventory to see available trims and colors.