THEY say that the best things always come in threes.

And that's spot on as far as Subaru is concerned, for the Japanese maker has come up with a hat-trick of an offer which should guarantee buyers of the Impreza 2..0RX manual model three worry free years.

Until the end of September this impressive, all-wheel-drive family holdall comes with a three years' or 36,000 mile free servicing package , three years/60,000 mile warranty and three years home and roadside assistance - providing cover for motoring emergencies in both the UK and throughout Europe.

What's more it won't cost you a penny more than the list price, which starts from £18,955.

The Japanese maker's shining stars, however, are its high performance WRX and STI models. Impressive cars indeed, but they've been rocketed into a new galaxy with the arrival of the astonishing Cosworth Impreza STI CS400.

This is the first genuine Cosworth-developed road car since 1996 and it will be as rare as hen's teeth, for production of this latest limited edition Impreza is restricted to 75 cars which will cost from £49,995.

The Cosworth-tuned car is one of the world's quickest hatchbacks.  Subaru's renowned 2.5-litre turbocharged ‘Boxer' engine is transformed to produce 33 per cent more power, drawing heavily on Cosworth's extensive Formula 1 experience. 

With 400PS on tap, the new model reaches 62mph in just 3.7 seconds, going on to cover a quarter mile in 12.75 seconds at a terminal speed of 107mph.  Top speed is limited to 155mph.

Meanwhile the standard STI is the subject of a very special offer with a performance boosting 330R pack available at no extra cost until the end of September.

The pack includes 18-inch five spoke alloys and a power increase from 300ps to 330ps at 5,400rpm and an increase in torque from 407Nm to a staggering 470Nm, at a much lower 3,400rpm.

All that translates into a top speed of 155mph and a 0-62mph time of just 4.8 seconds for the same £27,590 price as a standard WRX STI Type UK.

Almost the same money will buy you the limited edition Forester Suretrak which is based on the highly specced 2.0D XC model but features an array of additional features including a full leather interior, electrically adjustable driver's seat, electric folding, heated door mirrors, ultrasonic rear parking sensors, rear privacy glass and front and rear underguards, priced from £27,320.