2015 Subaru WRX STI S207

The S207 developed the Japanese WRX STI into a coordinated STI complete car, combining a 328 PS EJ20, chassis revisions and distinctive equipment. Its 400-car programme contains the NBR Challenge Package and the smaller yellow allocation; those names describe overlapping subsets.

An S-series identity with a single programme boundary

STI’s heritage record identifies S207 as its 2015 complete model and gives a 400-unit reference. The base WRX STI family explains the architecture, while S207 identifies the finished STI package. This matters when distinguishing an original car from a normal VAB wearing individual performance parts. The programme should be catalogued once, with its equipment choices and internal allocations explained within the same profile rather than turned into independent populations.

STI: S207 heritage, allocations and specifications

The EJ20 specification is precisely stated

The factory table lists a 1,994 cc turbocharged EJ20, 241 kW or 328 PS at 7,200 rpm, and 431 Nm from 3,200 to 4,800 rpm. A six-speed manual connects that engine to the all-wheel-drive system. Retaining the original PS unit avoids treating it as an identical SAE horsepower measurement. These figures describe the complete factory specification, while the tune and measured output of an individual car today require its own mechanical records.

Chassis development is as important as engine output

STI identifies Bilstein suspension using DampMatic II at the front as part of the S207 specification. The engineering interest lies in coordinating wheel control and body response with the powertrain, rather than describing the car only through its engine output. During inspection, suspension service history and the correct component specification help explain whether an example still represents the original package. Replacement parts do not automatically invalidate identity, but they should be documented accurately.

STI: S207 heritage, allocations and specifications

NBR equipment and yellow paint sit within the 400

The NBR Challenge Package has a 200-car limit within the broader programme. The yellow allocation is smaller again, with 100 cars within that package reference. These are useful distinctions for equipment and appearance research, not extra cars to add to the parent total. The photographed Osaka show vehicle is identified as an S207 NBR Challenge Package example. Its display context supports the visual record without establishing a complete production ledger.

STI: S207 heritage, allocations and specifications

Authenticate the complete car rather than its accessories

Original order, registration and STI documentation should connect the vehicle’s identity with its S207 specification and any NBR package. Detailed images of trim, bodywork, engine bay and chassis equipment can then support that record. Individual STI components may be available separately or transferred between cars. The inventory’s NBR and yellow rows are therefore retained as aliases within this profile, allowing future searches to find the programme without importing duplicate vehicle identities.

Specifications and identity reference

Rarity and production scope

STI records a 400-car S207 programme, including the 200-car NBR Challenge Package allocation and its 100-car yellow subset. SUB-153 and SUB-154 are consolidated into SUB-152. Their figures are not summed to create 700 cars, and the limits are not presented as a newly audited factory completion census. The included NBR display photograph illustrates a particular package within the parent identity; exact completed production remains blank.

What the photograph represents

S207 NBR Challenge Package display car at Osaka Motor Show 2015. The yellow NBR configuration is a subset of the parent S207 programme, not an additional production run. Exhibition photography does not establish a customer delivery or the full completion count.

Related Subaru profiles

• 2017 Subaru WRX STI S208
• 2018 Subaru WRX STI Type RA-R
• 2019 Subaru WRX STI S209

Frequently asked questions

Are the NBR and yellow cars additional to 400?

No. The 200 NBR cars and the 100-car yellow subset sit inside the S207 programme.

Does an STI body kit establish S207 identity?

No. The complete vehicle needs original documentation connecting its chassis with the S207 programme and package.

What is the production-count boundary for this profile?

STI records a 400-car S207 programme, including the 200-car NBR Challenge Package allocation and its 100-car yellow subset. SUB-153 and SUB-154 are consolidated into SUB-152. Their figures are not summed to create 700 cars, and the limits are not presented as a newly audited factory completion census. The included NBR display photograph illustrates a particular package within the parent identity; exact completed production remains blank.

Sources and further reading

1. STI: S207 heritage, allocations and specifications

Research checked 19 October 2026. Linked manufacturer heritage pages, factory announcements, official distributor publications and labelled contemporary coverage support the specifically identified claims. Photographic descriptions identify the illustrated subject. Design analysis and suggested authentication steps are editorial interpretation.