The Audi RS 5 features a high-‐revving 4.2-‐liter V8 with 450 horsepower and a seven-‐speed S tronic® transmission with launch control program. The 4.2 liter, naturally aspirated FSI® engine delivers 450 horsepower and 317 lb-‐ft of torque to propel the RS 5 from 0 to 60 in just 4.5 seconds and an electronically-‐governed top speed of 174 mph.
The powerful RS 5 features an optimized engine and drivetrain, on-‐demand oil pump, and energy-‐recovery system that conserve energy during coasting and braking. The standard seven-‐speed double clutch S tronic transmission, with its high efficiency ratio and its high-‐geared top speed, also enhances efficiency. Fuel economy is a respectable 16 city / 23 highway / 18 combined.
The RS 5 can operate in fully automatic mode, or the driver can shift via the gear selector or shift paddles on the steering wheel. Audi drive select system adjusts the vehicle's transmission shift characteristics, throttle response, dynamic steering and sports differential. The driver can select from auto, comfort, dynamic and individual Audi drive select settings, making the RS 5 a potent drive for a weekend excursion as well as on the track.
The self-‐locking crown-‐gear center differential is compact and lightweight and attains a high efficiency ratio. Thanks to its package of plates, the differential can vary the distribution of torque widely between the front and rear axles. If necessary, up to 70 percent can flow to the front or as much as 85 percent toward the tail end. The 40:60 ratio of the standard rear-‐biased configuration ensures sporty handling.
This new differential operates in conjunction with electronic torque vectoring. As a perfect complement to the new quattro® drivetrain, the sport differential at the rear axle is standard. The sport-‐tuned suspension renders the body 0.8 inches lower than that of the Audi A5. The 19-‐inch alloy wheels fitted with 265/35 performance tires are standard with an exclusive ten-‐spoke forged design. Five-‐spoke 20-‐inch wheels and 275/30 performance tires are optional on the RS 5.
The brake system employs powerful and internally-‐ventilated discs, which measure 14.4 inches in diameter at the front axle. The high-‐gloss black brake calipers bearing RS logos are made of aluminum and the front calipers are fitted with eight pistons each. Audi can optionally fit the front axle with ceramic carbon-‐fiber brake discs measuring 15 inches in diameter. The electronic stability control (ESC) integrates a sport mode and can be switched off entirely.