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At the 2011 Los Angeles International Auto Show
Subaru BRZ Concept STI sports coupé announcing
The boxer, front-engine RWD BRZ of spring 2012

Subaru BRZ Concept - STI

A carbon-fiber roof to lower the centre of gravity.

17 Nov. 2011: The upcoming Subaru BRZ sports car was revealed yesterday in an all-new concept version at the 2011 Los Angeles International Auto Show (18 to 27 November 2011).

Subaru of America, Inc. says that the production Subaru BRZ coupé will be the first rear-wheel-drive Subaru and the only mass-produced front-, boxer-engine rear-wheel drive sports car in the world, when production begins this spring.

The wholly owned subsidiary of Fuji Heavy Industries Ltd adds that the BRZ Concept - STI strongly hints at the actual styling of the production BRZ, featuring STI – the performance brand of Subaru – performance characteristics such as lightweight chassis and race-bred characteristics.

 Engine

Subaru BRZ Concept STI sport coupé, rear view.

Bold rear fender flares, large diffuser, polished stainless-steel tailpipes and vented bumper corners to improve aerodynamics.

The concept car adopts the new Subaru “FA” BOXER engine, which was exclusively designed for the RWD BRZ sports car. It is a 2.0-litre naturally-aspirated four-cylinder boxer engine (that is with horizontally-opposed cylinders, or 180° V engine) with equal bore and stroke dimension (also known as a square bore and stroke engine) of 86 mm and a direct gasoline (petrol) injection fuel system (output expected around 200hp, but figures were not announced yet).

 Chassis

The engine is mounted low and rearward in its compartment to enhance balance and precise handling. 

Compared with other Subaru models, also distinguished by their low centre of gravity and good weight distribution, the engine in the Subaru BRZ - STI is 4.7 inches (119 mm) lower and is positioned 9.4 inches (239 mm) closer to the centre of the chassis compared to a Subaru Impreza.

The chassis features an STI-tuned suspension, Brembo brakes and specific 18-inch wheels with 215/45R18 (front) and 225/45R18 (rear) tires. The Subaru-engineered and built chassis (the BRZ is co-developped with Toyota, which owns of 16.5% of Fuji Heavy Industries) boasts a rigid frame housing a two-plus-two interior and front engine/rear-wheel drive layout. The design aims to combine lightweight, a low polar moment and sharp reflexes, helped by the low engine placement which also allows for a very low and blade-like hood design.

 Design

The 166.7-inch long body (4234 mm) has clear sporting proportions with 70.9 inch (1801 mm) width and 50.4 inch (1280 mm) height, over a 101.2 inch (2570 mm) wheelbase, giving short front and rear overhangs to reduce yaw movements.

The sporting look starts from the hexagonal lower front grille, hawk eye headlights and fin-shaped fog lamps, especially with the exterior “WR Blue Pearl II” colour, which is a new generation of the WR blue paint scheme, known in both racing and production STI’s.

The aero-tuned lower front spoiler, rear fascia and rear wing add down-force, with the carbon-fiber roof helping to lower the centre of gravity (CoG), which Subaru expects to be one of the lowest of any production car made.

The bold rear fender flares and large rear-diffuser give way to polished stainless-steel quad-tailpipes, with vented rear bumper corners to improve aerodynamics performance.

 

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