In two-door form, the Wrangler is configurable in either X, Sahara and Rubicon trim. New in 2008, a right-hand drive Wrangler X is available for North America. The two-door Wrangler uses a standard four-wheel drive system. The four-door Wrangler's are labeled Unlimited, which inevitably incorporates a longer wheelbase into the original design. The Unlimited can be ordered as a two-wheel drive or four-wheel drive system. Trims offered on the Wrangler Unlimited are X, Sahara (two- or four-wheel drive); or the Rubicon in four-wheel drive only. All come with the 3.8-liter V-6 engine producing 202 horsepower. The standard transmission is a six-speed manual with overdrive, or an optional four-speed automatic with overdrive is available (standard on Wrangler X RHD). Standard safety features include side impact door beams, four-wheel anti-lock disc brakes, and an energy-absorbing steering column. In 2008 the Wrangler offers a new Sahara Appearance Group, Detonator Yellow exterior color (Wrangler X and Rubicon trims), and available remote start. Also, the Wrangler Sahara and Rubicon both receive a soft top as standard equipment.