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22 May 2025 STI INFORMATION
SUBARU / STI to Compete in 2025 Nürburgring 24-Hour Race
Subaru Tecnica International *1, Subaru's motorsport subsidiary, will participate in 53rd Nürburgring 24-Hour Race on 19 and 22 June 2025 at the Nürburgring circuit in Germany with its latest race car based on the WRX. This is the 18th year of their challenge in the event since 2008.
The SUBARU WRX NBR CHALLENGE 2025 will be powered by a new 2.4-liter direct-injection turbo engine and will compete in the SP4T class, where turbocharged cars between 2.0 and 2.6 liters are entered.
The team will be aiming for a class win and top overall ranking with car number 88, following the win in SP4T class in 2024 and also the number considered auspicious in Japan.
The track is said to be the toughest in the world with a total length of 25km, a 300m difference in elevation and ever-changing weather conditions. In order for the drivers to drive fast and control the car as they wish on such a challenging track, the race car has been developed with the SGP (Subaru Global Platform) at its core, while taking advantage of the basic layout of the horizontally opposed engine and symmetrical AWD.
The team will be aiming for a class win and top overall ranking with car number 88, following the win in SP4T class in 2024 and also the number considered auspicious in Japan.
The track is said to be the toughest in the world with a total length of 25km, a 300m difference in elevation and ever-changing weather conditions. In order for the drivers to drive fast and control the car as they wish on such a challenging track, the race car has been developed with the SGP (Subaru Global Platform) at its core, while taking advantage of the basic layout of the horizontally opposed engine and symmetrical AWD.
【SUBARU WRX NBR CHALLENGE 2025 Vehicle Package】
Well-matured basic package (AWD, special suspension, racing features, introduction of flexible philosophy)
+Further deepening through a combination of Subaru's latest technologies (direct-injection engine and SGP)
- Rigidity part: A new item, “STI Flexible Draw Floor Bar,” is installed in the upper part of rear suspension to improve handing stability
- Flexible performance wheels: Improved inner rim shape from 2024 to improve handling stability
- Aerodynamics: Adoption of new wing stays and wing tip plates that provide effective downforce and introduction of floor panels
- Engine: Increased air intake efficiency and fuel economy due to larger air restrictor diameter
- Exhaust: Inconel material used for exhaust manifolds to ensure reliability
- Electrical components: Compact rear differential electric oil pump is adopted to reduce the load on the electrical system
Based on the 2024 race car, the matured 2025 race car is designed to improve reliability, durability, and driving performance, and to be the ultimate car that can be driven well.
Takuya Sawada will be the Team Manager with Naoki Shibuya acting as the Technical Manager for development the vehicle. Carlo van Dam (Netherlands), Tim Schrick (Germany), Kota Sasaki and Rintaro Kubo will drive for the team.
Eight service technicians chosen through a rigorous selection process from Subaru dealerships in Japan will also join and support the team for the races again this year.
The participation of dealership service technicians in overseas motor races has been ongoing since 1990, with the aim of delivering “Enjoyment and Peace of Mind” in customers’ car life by improving the technicians' technical skills. To date (as of 2024), 401 service technicians have worked on the Safari Rally, the WRC*2 and the Nürburgring 24-Hour Race.
Well-matured basic package (AWD, special suspension, racing features, introduction of flexible philosophy)
+Further deepening through a combination of Subaru's latest technologies (direct-injection engine and SGP)
- Rigidity part: A new item, “STI Flexible Draw Floor Bar,” is installed in the upper part of rear suspension to improve handing stability
- Flexible performance wheels: Improved inner rim shape from 2024 to improve handling stability
- Aerodynamics: Adoption of new wing stays and wing tip plates that provide effective downforce and introduction of floor panels
- Engine: Increased air intake efficiency and fuel economy due to larger air restrictor diameter
- Exhaust: Inconel material used for exhaust manifolds to ensure reliability
- Electrical components: Compact rear differential electric oil pump is adopted to reduce the load on the electrical system
Based on the 2024 race car, the matured 2025 race car is designed to improve reliability, durability, and driving performance, and to be the ultimate car that can be driven well.
Takuya Sawada will be the Team Manager with Naoki Shibuya acting as the Technical Manager for development the vehicle. Carlo van Dam (Netherlands), Tim Schrick (Germany), Kota Sasaki and Rintaro Kubo will drive for the team.
Eight service technicians chosen through a rigorous selection process from Subaru dealerships in Japan will also join and support the team for the races again this year.
The participation of dealership service technicians in overseas motor races has been ongoing since 1990, with the aim of delivering “Enjoyment and Peace of Mind” in customers’ car life by improving the technicians' technical skills. To date (as of 2024), 401 service technicians have worked on the Safari Rally, the WRC*2 and the Nürburgring 24-Hour Race.
*1: Subaru Tecnica International Inc (President: Hiromi Tamo, Mitaka City, Tokyo, Abbreviation: STI)
*2: World Rally Championship
【Race Car】
| Model Name | SUBARU WRX NBR CHALLENGE 2025 |
| Overall length | 5,270mm |
| Overall width | 1,900mm |
| Overall height | 1,390mm |
| Wheelbase | 2,690mm |
| Engine type | FA24 BOXER DOHC 16 valve AVCS single scroll turbo |
| Engine displacement | 2,387cc |
| Vehicle weight | 1,290kg |
| Maximum output | 280kW(380PS) / 6,000rpm |
| Maximum torque | 590Nm(60kgf･m) / 3,500rpm |
| Air restrictor | φ41mm |
| Transmission | 6-speed sequential gearbox + paddle shift |
| Clutch | O.R.C 5.5-inch, multi-plate |
| Suspension | Front: Strut / Rear: Double wishbone |
| Brakes | Front: 6-pot / Rear: 4-pot |
| Wheels | BBS 18 x 11J |
| Tires | FALKEN 280/680R18 |