The standard WRX STI’s 296bhp 2.5-litre boxer engine can be had with two power upgrades. There’s the existing WRX STI 320R model, which boosts the engine’s output to 316bhp.
Plus, Subaru has now added the 340R model, which costs an extra £1,559 and boosts the 2.5-litre turbo engine to 335bhp and 490Nm - an increase of 39bhp and 83Nm over the standard car.
The new 340R will sprint from 0-60mph in 4.7 seconds, which is half a second faster than the standard WRX STI.
Both upgraded Subaru WRX STI models use a retuned engine ECU and a new exhaust to improve power. Current WRX STI owners can have either of the upgrades fitted to their cars retrospectively, without affecting their warranty.
Subaru has also announced a new price for the Legacy ES Nav in time for the September reg change. The Legacy now costs £19,995 - a £3,000 price reduction - and comes fitted as standard with automatic headlights and wipers, sat-nav, air-conditioning and Bluetooth.