The ATS Coupe V6’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The TT doesn’t offer pre-crash pretensioners.
For enhanced safety, the Cadillac ATS Coupe’s rear seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Audi TT doesn’t offer height adjustable seat belts.
The ATS Coupe V6 offers optional Front Automatic Braking, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The TT doesn't offer collision warning or crash mitigation brakes.
Over 200 people are killed each year when backed over by motor vehicles. The ATS Coupe V6 offers optional Rear Automatic Braking that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The TT doesn’t offer backup collision prevention brakes.
The ATS Coupe’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The TT doesn’t offer a lane departure warning system.
To help make backing safer, the ATS Coupe’s optional 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 TT doesn’t offer a cross-path warning system.
The ATS Coupe 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 TT 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 ATS Coupe and the TT 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, rearview cameras, available all-wheel drive, blind spot warning systems and rear parking sensors.
Cadillac’s powertrain warranty covers the ATS Coupe 2 years and 20,000 miles longer than Audi covers the TT. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the TT ends after only 4 years or 50,000 miles.
Cadillac pays for scheduled maintenance on the ATS Coupe for 3 years and 36,000 miles. Cadillac will pay for oil changes, lubrication and any other required maintenance. Audi only pays for the first scheduled maintenance visit on the TT.
There are over 3 times as many Cadillac dealers as there are Audi dealers, which makes it much easier should you ever need service under the ATS Coupe’s warranty.
The ATS Coupe’s standard 2.0 turbo 4 cyl. produces 52 more horsepower (272 vs. 220) and 37 lbs.-ft. more torque (295 vs. 258) than the TT 2.0 TFSI’s standard 2.0 turbo 4 cyl. The ATS Coupe’s 2.0 turbo 4 cyl. produces 15 lbs.-ft. more torque (295 vs. 280) than the TTS’ standard 2.0 turbo 4 cyl. The ATS Coupe’s optional 3.6 DOHC V6 produces 43 more horsepower (335 vs. 292) and 5 lbs.-ft. more torque (285 vs. 280) than the TTS’ standard 2.0 turbo 4 cyl.
An engine control system that can shut down half of the engine’s cylinders helps improve the ATS Coupe V6’s fuel efficiency. The TT doesn’t offer a system that can shut down part of the engine.
In heavy traffic or at stoplights the ATS Coupe Auto’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The TT doesn’t offer an automatic engine start/stop system.
To lower fuel costs and make buying fuel easier, the Cadillac ATS Coupe uses regular unleaded gasoline (premium recommended with the 2.0 turbo 4 cyl. engine for maximum performance). The TT requires premium, which can cost 20 to 55 cents more per gallon.
The ATS Coupe has 1.5 gallons more fuel capacity than the TT (16 vs. 14.5 gallons), for longer range between fill-ups.
For better stopping power the ATS Coupe’s standard brake rotors are larger than those on the TT:
The ATS Coupe’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the TT 2.0 TSFI are solid, not vented.
For better traction and acceleration, the ATS Coupe has larger rear tires than the TT (255/35R18 vs. 245/40R18).
The ATS Coupe’s 255/35R18 rear tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the TT 2.0 TSFI’s standard 40 series tires.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the ATS Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The TT doesn’t offer run-flat tires.
For a smoother ride and more stable handling, the ATS Coupe’s wheelbase is 10.7 inches longer than on the TT (109.3 inches vs. 98.6 inches).
The ATS Coupe uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The TT doesn’t offer active noise cancellation.
The ATS Coupe has .5 inches more front headroom, 1.2 inches more front legroom, .5 inches more front shoulder room, 1.3 inches more rear headroom, 4.6 inches more rear legroom and 3.2 inches more rear shoulder room than the TT Coupe.
The ATS Coupe (except Manual) 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 TT doesn’t offer a remote starting system.
When two different drivers share the ATS Coupe, the optional memory system makes it convenient for both. Each keyless remote activates different, customized memories for the driver’s seat position, steering wheel position and outside mirror angle. The TT doesn’t offer a memory system.
The ATS Coupe’s optional easy entry system glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The TT doesn’t offer an easy entry system.
The ATS Coupe V6 offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The TT doesn’t offer a heads-up display.
While driving with high beams on, sensitive light sensors available for the ATS Coupe detect other vehicles which could be blinded and automatically switch to low beams. The TT doesn’t offer automatic dimming high beams.
To help drivers see further while navigating curves, the ATS Coupe offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The TT doesn’t offer cornering lights.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the ATS Coupe has standard extendable sun visors. The TT doesn’t offer extendable visors.
The ATS Coupe’s sun-visors swivel front-to-side to block glare from the side windows. The TT’s visors are fixed into the windshield header.
When the ATS Coupe with available tilt-down mirrors 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 TT’s mirrors don’t automatically adjust for backing.
On extremely cold Winter days, the ATS Coupe’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The TT doesn’t offer a heated steering wheel.
The ATS Coupe has a standard center folding armrest for the rear passengers. A center armrest helps make rear passengers more comfortable. The TT doesn’t offer a rear seat center armrest.
The ATS Coupe’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The TT doesn’t offer dual zone air conditioning.
For greater rear passenger comfort, the ATS Coupe has standard rear a/c vents to keep rear occupants more comfortable. The TT doesn’t offer rear vents.
To keep a safe, consistent following distance, the ATS Coupe V6 offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The TT doesn’t offer an adaptive cruise control.
The ATS Coupe 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 TT doesn’t offer a house-current electrical outlet.
A group of representative automotive journalists from North America selected the ATS as the 2013 North American Car of the Year. The TT has never been chosen.
The Cadillac ATS outsold the Audi TT by over eight to one during the 2016 model year.