Under the skin: BRZ ZC15 stays simple on purpose
The engine cover in Subaru’s own photo says TOYOTA D-4S and SUBARU BOXER on the same piece of plastic. That is the BRZ in one picture, and the ZC15 leaves it alone.
ZC15 hardware, production and timing checked against Subaru's Sept. 28, 2026, release on Oct. 6, 2026; engine, injection and layout facts against Subaru's 2012 BRZ release, Subaru Corporation's 2020 BRZ release, the 2026 BRZ pricing release and Subaru Canada's 2026 BRZ engineering page. Subaru has not announced ZC15 pricing or explained the V-bar's tuning.
Look at the engine cover in Subaru’s own photo. It says TOYOTA D-4S and SUBARU BOXER on the same piece of plastic. That is the BRZ in one picture: a Subaru flat-four with Toyota’s fuel injection, in a car the two companies developed together. Subaru Corporation says the second-generation BRZ “was born in a joint development project with Toyota Motor Corporation.”
The new BRZ ZC15 is a 300-car anniversary edition, and the most interesting engineering decision Subaru made for it is the one it did not make. The engine stays exactly as it is.
What D-4S actually means
D-4S is Toyota’s name for a system that gives each cylinder two kinds of fuel injector. Subaru explained it when the first BRZ arrived in 2012. Direct injectors spray fuel straight into the combustion chamber, which cools the cylinder and lets the engine run a very high compression ratio (12.5:1 on that original 2.0-liter). Port injectors spray fuel upstream, into the intake ports, and Subaru said that in light- and medium-load driving they help produce precise combustion.
In plain terms, the engine gets the cooling and high compression that direct injection allows, plus port injectors for the gentle driving most cars do most of the time. Subaru Canada still lists direct and port fuel injection for the 2026 car.
The numbers Subaru left alone
The ZC15 uses the same naturally aspirated 2.4-liter Subaru boxer as every current BRZ. Subaru quotes 228 horsepower, and Subaru Canada lists that at 7,000 rpm, with 184 lb-ft of torque at 3,700 rpm and a 7,500-rpm redline. No turbo, no tune, no new number for the brochure.
Why the engine sits where it does
The boxer layout is the whole reason this car exists. A flat engine is short, so it can sit low. Subaru Corporation says the BRZ mounts its boxer “as low as possible” to make the most of its low center of gravity, light weight and compact size. Back in 2012, Subaru said the BRZ engine sat about 2.4 inches lower in its mounts than the Impreza’s 2.0-liter and 5 inches lower overall, and quoted a center of gravity of just 18.1 inches for that first car. Rear-wheel drive let Subaru put the engine lower and farther back than in any other Subaru of the time.
Three pedals or nothing
Every 2026 BRZ comes standard with a six-speed manual and a Torsen limited-slip differential, and the regular BRZ Limited also offers a six-speed automatic. The ZC15 does not. Subaru says it pairs the 2.4 “exclusively with a 6-speed manual transmission powering the rear wheels,” with an STI aluminum and leather short shifter. So your left leg has been drafted.
The parts you feel more than you brag about
Under the hood, Subaru adds a flexible V-bar, the STI-branded bar across the top of the photo. Subaru does not say how it is tuned on the BRZ. In the same release, it says the flexible strut tower bar on the WRX GD25 enhances rigidity, which is the usual job for a bar like this. Outside, there are gold-painted Brembo calipers behind matte bronze wheels and a black decklid spoiler.
Only 300 are coming, and Subaru says the ZC15 is available in early 2027, with specifications and pricing closer to launch. If you want the full spec rundown, our news story on the ZC15 has it, and the WRX version of this story is here.
Would you rather Subaru had found 30 more horsepower, or kept it exactly like this?
Sources
- Subaru of America, “Subaru Debuts Limited-Production 2027 Subaru WRX GD25, 2027 Subaru BRZ ZC15 at Boxerfest 2026,” Sept. 28, 2026
- Subaru of America, “Subaru of America Announces Pricing on 2026 Subaru BRZ,” Sept. 24, 2025
- Subaru Corporation, “World Premiere of All-New Subaru BRZ,” Nov. 18, 2020
- Subaru of America via PR Newswire, “2013 Subaru BRZ Sports Car Makes U.S. Debut at North American International Auto Show,” Jan. 9, 2012
- Subaru Canada, “2026 Subaru BRZ engineering”
