2017 Subaru WRX STI S208

The S208 continued STI’s Japanese complete-car programme with a 329 PS EJ20 and a 450-car reference. Its NBR Challenge Package introduced a recognisable carbon-roof specification within the parent allocation, making package scope essential when describing both equipment and rarity.

The 2017 complete car follows S207

STI places S208 in its 2017 heritage sequence and records a 450-unit programme. The family resemblance to S207 makes comparison useful, but the two are separate complete models with different dates and stated specifications. S208 identity should therefore be established through original vehicle documentation. A normal WRX STI equipped with selected S-series components does not become a factory S208, even when its exterior presentation closely resembles one.

STI: S208 complete model and NBR allocation

Keep the published engine units intact

STI lists the 1,994 cc EJ20 at 242 kW or 329 PS and 432 Nm. Those references distinguish the published S208 specification without overstating a small numerical difference from S207 as a road-test conclusion. The six-speed manual and all-wheel-drive layout remain central to the car’s character. For an individual vehicle, present calibration, rebuild history and aftermarket tuning need separate records rather than being inferred from the historical factory power table.

Chassis equipment expresses the complete-model approach

The factory material identifies DampMatic II front suspension and an 11:1 steering ratio, with 19-inch BBS wheels and 255/35 R19 tyres in its specification. The meaningful engineering story is the coordinated response of steering, suspension and tyres. An inspection should consider correct specification and maintenance across the whole system. A wheel design or branded damper is useful evidence, but neither alone verifies the original identity of a complete S-series car.

STI: S208 complete model and NBR allocation

The NBR package is a subset, not another 350 cars

The NBR Challenge Package has a 350-car allocation within the 450 total. Carbon-roof and package-specific details should be described at the appropriate level rather than assumed for every parent-programme car. The included photograph depicts an identified NBR Challenge Package display example with its carbon rear-wing treatment. It illustrates a particular S208 configuration, while the total and package boundaries come from STI’s heritage account rather than from the image.

STI: S208 complete model and NBR allocation

Build the record around the original configuration

A useful collector file connects chassis documentation, edition records and package choice, then records later servicing or alterations. Roof, aerodynamic components, wheels, seats and trim should be photographed together with the documentary evidence. This helps distinguish a complete factory package from accessories fitted after delivery. SUB-167, the inventory’s separate NBR row, is consolidated here so the same underlying programme cannot be imported again under its equipment-package name.

Specifications and identity reference

Rarity and production scope

STI gives a 450-car S208 programme reference, including up to 350 NBR Challenge Package cars. SUB-167 is consolidated into this parent profile, not imported as an additional 350-car production run. Package-specific carbon equipment is described within that scope. The manufacturer reference is retained with attribution; no new completed-chassis census or survivor total is claimed, and the exact completed-production field remains blank.

What the photograph represents

S208 NBR Challenge Package Carbon Rear Wing display example at Osaka Motor Show 2017. This photograph illustrates a package within the 450-car parent programme, not a separate population of 350 additional cars.

Related Subaru profiles

• 2015 Subaru WRX STI S207
• 2018 Subaru WRX STI Type RA-R
• 2019 Subaru WRX STI S209

Frequently asked questions

Should 350 NBR cars be added to 450?

No. The NBR allocation is within the parent S208 programme.

Does every S208 specification automatically include the NBR carbon package?

Equipment needs to be checked against the car’s documented package; NBR-specific features should not be assigned indiscriminately to the entire programme.

What is the production-count boundary for this profile?

STI gives a 450-car S208 programme reference, including up to 350 NBR Challenge Package cars. SUB-167 is consolidated into this parent profile, not imported as an additional 350-car production run. Package-specific carbon equipment is described within that scope. The manufacturer reference is retained with attribution; no new completed-chassis census or survivor total is claimed, and the exact completed-production field remains blank.

Sources and further reading

1. STI: S208 complete model and NBR allocation

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.