2012 Nissan Sport Cars GT-R

The 2012 Nissan GT-R version of its flagship GT-R sports cars. This is designed to be one of the best models in automobile industry. Accordingly, the manufacturer has modified the front end along with strengthening the dashboard support area and the forward suspension. The GTR is said to be 3% more efficient than the earlier models. Yesterday, Nissan Motors offered up the full information on the Japanese version of the 2011 Nissan GT-R. Already one of the fastest cars in the world, the Nissan sports cars coupe receives a variety of improvements for 2011 (at least in the Japanese market) to help distance itself from the competition.

There are only subtle refinements made to the exterior of the latest Nissan GT-R supercar and while these changes might be hard to notice in traffic, the physical upgrades to the 2011 model year GT-R offer a 10% improvement in downforce and a decrease in drag. There is also a slightly refined interior with a new instrument panel and carbon fiber trim here and there but the big news is what is under the hood.

2012 Nissan Sport Cars GT-R

For 2012, Nissan GT-R features improved engine output and torque, greater fuel efficiency, revised handling, a refreshed exterior with improved aerodynamics, revised interior treatment and new wheels and tires. The large number of enhancements for the new model year is part of the continuous advancement of the GT-R design, technology and performance since its debut.

Developed under the theme of offering the "world's best multi-performance and responsive driving pleasure," every area of the Nissan GT-R has been carefully rethought or retuned for 2012. The changes range from greater body stability and strength and improved aerodynamics performance to a sportier interior and enhanced performance.

The latest version of the potent Nissan GT-R goes on sale at select Nissan dealers in the United States and Canada early in the 2011 calendar year. Full details on the North American version of the Nissan GT-R will be available at the Los Angeles show in November.

Though exact specifications have yet to be released for the U.S. cars, horsepower and torque figures have been revealed for Japan market cars. The updated 2012 Nissan Sport Cars GT-R (Japan Specs) Set For North American will be powered by the same twin-turbocharged 3.8-liter V-6 offered in the current GT-R. However, the turbo's boost pressure has been increased, the intake and exhaust systems have been opened up to permit freer breathing, and the ECU has been tweaked to take advantage of these changes.

2012 Nissan Sport Cars GT-R

The 2012 in the US market Nissan GT-R is powered by the same twin turbocharged 3.8L V6 that was offered in the current GT-R, an enlarged charge air intake pipe and an enlarged exhaust system combined with a recalibration of the car’s ECU, the 2011 GT-R will offer 523 horsepower and 451lb-ft of torque. This is a fair improvement over the output of the current models 485hp/434tq and this extra power could help the mighty GT-R move up the list of the fastest cars in the world (based on testing done at the famed Nürburgring in Germany). The 2011 Nissan GT-R will be the 2012 Nissan GT-R when it hits US shores next year.

Porsche 911 Speedster

The 911 Speedster is the latest product retailed by Porsche’s Exclusive department

Out of homage to the first 1954 Speedster just 356 are going to be built

It’s a great car but that’s more because it’s a 911 than a Speedster

Speedster takes the wide body of the C4 S Cabriolet

Unlike the original, the new Speedster is waterproof

Your attention is drawn first to the signature double bubble hood cover and the shortened windscreen

402bhp upgraded powertrain from the Sport Classic

Electrics lift the hood cover, which you then manually hinge back to provide access to the hood

The hood mechanism is more complex than complicated

Porsche says one person suitably trained can operate the roof in under two minutes

Wide Fuchs-style wheels are Sport Classic car carry overs

The interior is so covered in leather even the air vents and coat hooks are swaddled in the stuff

PDK is the only available transmission

Porsche 911 Speedster

Price: £144,100; Top speed: 190mph; 0-62mph: 4.4sec; Economy: 27.4mpg; CO2: 242g/km; Kerb weight: 1540kg; Engine: 6 cyls, 3800cc, petrol; Power: 402bhp at 7300rpm; Torque: 310lb ft at 4200rpm; Gearbox: 7-spd dual-clutch auto

Cadillac CTS Sports Wagon

The CTS is more expensive than the BMW 5-series Touring, which is a better car

Distinctive looks but not the most practical

Crudly over-responsive throttle makes it a challenge to drive smoothly

The ride is pliant and wind noise exceptionally low

307bhp, direct injection, 3.6-litre V6 is impressively smooth

A shame that the CTS doesn't offer a diesel variant

The dash is very pleasing

The boot is too narrow and high-floored

Cadillac CTS Sport Wagon 3.6 Sport Luxury

Price: £47,352; Top speed: 150mph; 0-62mph: 7.0sec; Economy: 27.2mpg (combined); CO2: 245g/km; Engine: V6, 3564cc, petrol; Power: 307bhp at 6400rpm; Torque: 276lb ft at 5200rpm; Gearbox: 6-spd auto