To help make backing safer, the CTS-V’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The S7 doesn’t offer a cross-path warning system.
The CTS-V has standard OnStar ®, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The S7 doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the CTS-V and the S7 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, blind spot warning systems and rearview cameras.
Cadillac’s powertrain warranty covers the CTS-V 2 years and 20,000 miles longer than Audi covers the S7. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the S7 ends after only 4 years or 50,000 miles.
Cadillac pays for scheduled maintenance on the CTS-V for 4 years and 50,000 miles. Cadillac will pay for oil changes, lubrication and any other required maintenance. Audi only pays for the first scheduled maintenance visit on the S7.
There are almost 6 times as many Cadillac dealers as there are Audi dealers, which makes it much easier should you ever need service under the CTS-V’s warranty.
J.D. Power and Associates’ 2015 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Cadillac vehicles are more reliable than Audi vehicles. J.D. Power ranks Cadillac fourth in reliability, above the industry average. With 24 more problems per 100 vehicles, Audi is ranked 14th.
The CTS-V’s 6.2 supercharged V8 produces 190 more horsepower (640 vs. 450) and 224 lbs.-ft. more torque (630 vs. 406) than the S7’s 4.0 turbo V8.
The CTS-V 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 S7 doesn’t offer a cap-less fueling system.
The CTS-V stops shorter than the S7:
60 to 0 MPH
For better traction, the CTS-V has larger tires than the S7 (F:265/35R19 & R:295/30R19 vs. 255/40R19).
The CTS-V’s 265/35R19 front and 295/30R19 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the S7’s standard 40 series tires.
The Cadillac CTS-V may be more efficient, handle and accelerate better because it weighs about 350 pounds less than the Audi S7.
The CTS-V has standard seating for 5 passengers; the S7 can only carry 4.
The CTS-V has 3 cubic feet more passenger volume than the S7 (97 vs. 94).
The CTS-V has 3.5 inches more front headroom, 4.4 inches more front legroom and .9 inches more rear headroom than the S7.
The CTS-V has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The S7 doesn’t offer a remote starting system.
On a hot day the CTS-V’s driver can lower all the windows from a distance using the keyless remote. The driver of the S7 can’t use the remote to operate the windows.
A power rear sunshade is optional in the CTS-V to help block heat and glare for the rear passengers. The S7 doesn’t offer a rear sunshade.
When the CTS-V is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The S7’s mirrors don’t automatically adjust for backing.
The CTS-V has a standard heated steering wheel to take the chill out of steering on extremely cold Winter days before the car heater warms up. A heated steering wheel costs extra on the S7.
The CTS-V offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The S7 doesn’t offer a house-current electrical outlet.
The CTS-V’s Automatic Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The S7 doesn’t offer an automated parking system.
The CTS VSport was chosen as one of Car and Driver’s “Top Ten” for 6 of the last 8 years. The A7 hasn’t been picked since 2014.
Motor Trend selected the CTS as their 2014 Car of the Year. The S7 has never been chosen.