Audi RS4 Saloon vs Audi R8 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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Specs

Interior
	2008 Audi RS4 Saloon 4.2 quattro	2025 Audi R8 5.2 FSI V10 Performance Edition
Powertrain	6-speed Manual	7-speed Automatic
Drivetrain	4X4	4X4
Fuel economy, city	17.3 L/100km	--
Fuel economy, motorway	7.8 L/100km	--
Fuel tank volume	238 L	276 L
Engine
Fuel type	Petrol	Petrol
Power	309 kW	456 kW
Torque	583 N-m @ 5,500 RPM	786 N-m @ 6,600 RPM
Cylinders	8 cylinders	10 cylinders
Engine size	4,163 cc	5,204 cc
Maximum seating	5 seats	2 seats
Front legroom	--	--
Rear legroom	--	--
Exterior
Length	116.48 m	112.5 m
Width	46.13 m	51.74 m
Height	35.94 m	31.39 m
Wheelbase	67.34 m	67.31 m

2008 Audi RS4 Saloon

4.2 quattro

2025 Audi R8

5.2 FSI V10 Performance Edition

2008 Audi RS4 Saloon

4.2 quattro

2025 Audi R8

5.2 FSI V10 Performance Edition