2020 Audi R8 vs. 2019 Porsche 911

Detailed Review, Specifications & Comparison

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To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the R8. But it costs extra on the 911.

Both the R8 and the 911 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.


There are over 59 percent more Audi dealers than there are Porsche dealers, which makes it much easier should you ever need service under the R8’s warranty.


To reliably power the ignition and other systems and to recharge the battery, the R8 has a 210-amp alternator. The 911’s standard 204-amp alternator isn’t as powerful.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Porsche vehicles. Consumer Reports ranks Audi 4 places higher in reliability than Porsche.


The R8 has more powerful engines than the 911:



R8 V10 5.2 DOHC V10

562 HP

406 lbs.-ft.

R8 V10 Performance/Decennium 5.2 DOHC V10

602 HP

413 lbs.-ft.

911 3.0 turbo 6 cyl.

370 HP

331 lbs.-ft.

911 S 3.0 turbo 6 cyl.

420 HP

368 lbs.-ft.

911 GTS 3.0 turbo 6 cyl.

450 HP

405 lbs.-ft.

911 GT3 4.0 DOHC 6 cyl.

500 HP

339 lbs.-ft.

911 GT3 RS 4.0 DOHC 6 cyl.

520 HP

346 lbs.-ft.

911 Turbo 3.8 turbo 6 cyl.

540 HP

523 lbs.-ft.

911 Turbo S 3.8 turbo 6 cyl.

580 HP

553 lbs.-ft.

Fuel Economy and Range

The R8 V10 Performance’s standard fuel tank has 2.4 gallons more fuel capacity than the 911 RWD’s standard fuel tank (19.3 vs. 16.9 gallons), for longer range between fill-ups.

The R8 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The 911 doesn’t offer a cap-less fueling system.


The Audi R8 comes standard with an automatic transmission, for driver comfort, especially in the city. Automatic costs extra on the 911.

Brakes and Stopping

For better stopping power the R8’s standard brake rotors are larger than those on the 911:



Front Rotors

14.4 inches

13 inches

Rear Rotors

14 inches

13 inches

Tires and Wheels

For better traction, the R8 has larger front standard tires than the 911 (F:245/35R19 & R:295/35R19 vs. F:235/40R19 & R:295/35R19).

The R8’s standard tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the 911’s standard 40 series front tires. The R8’s optional tires have a lower 30 series profile than the 911’s optional 35 series front tires.

Suspension and Handling

For a smoother ride and more stable handling, the R8’s wheelbase is 7.8 inches longer than on the 911 (104.3 inches vs. 96.5 inches). The R8’s wheelbase is 7.6 inches longer than on the 911 GT3 (104.3 feet vs. 96.7 inches).

For better handling and stability, the track (width between the wheels) on the R8 is 3.7 inches wider in the front and 1.8 inches wider in the rear than the average track on the 911.

Passenger Space

The R8 Coupe has .5 inches more front headroom and 4.3 inches more front shoulder room than the 911 Coupe.


If the windows are left open on the R8 the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. The driver of the 911 can only operate the windows from inside the vehicle, with the ignition on.

Audi Advanced Key standard on the R8 allows you to unlock the driver’s door, trunk and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Porsche 911’s available Porsche Entry and Drive doesn’t unlock the trunk.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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