ATS Coupe

4 Series Coupe

Front Rotors

12.6 inches

12.3 inches

Rear Rotors

12.4 inches

11.8 inches

The ATS Coupe stops much shorter than the 4 Series Coupe:

ATS Coupe

4 Series Coupe

70 to 0 MPH

157 feet

170 feet

Car and Driver

Tires and Wheels

For better traction and acceleration, the ATS Coupe has larger rear tires than the 4 Series Coupe (255/35R18 vs. 225/45R18).

The ATS Coupe’s 225/40R18 front and 255/35R18 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the 4 Series Coupe’s standard 45 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. Run-flat tires aren’t available on some tire packages on the 4 Series Coupe.

Suspension and Handling

The ATS Coupe handles at .94 G’s, while the 430i Coupe pulls only .89 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the ATS Coupe FE3’s turning circle is 1.1 feet tighter than the 4 Series Coupe’s (36 feet vs. 37.1 feet). The ATS Coupe AWD’s turning circle is .6 feet tighter than the 4 Series Coupe xDrive’s (38.1 feet vs. 38.7 feet).

Chassis

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 4 Series Coupe doesn’t offer active noise cancellation.

Towing

The ATS Coupe V6 offers up to a 1000 lbs. towing capacity. The 4 Series Coupe has no towing capacity.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Cadillac service is better than BMW. J.D. Power ranks Cadillac third in service department satisfaction. With a 33% lower rating, BMW is ranked 11th.

Ergonomics

The ATS Coupe 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 4 Series Coupe doesn’t offer a remote starting 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 4 Series Coupe doesn’t offer an easy entry system.

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 4 Series Coupe doesn’t offer extendable visors.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Cadillac ATS has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the 4 Series Coupe.

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 4 Series Coupe doesn’t offer a house-current electrical outlet.

Economic Advantages

Insurance will cost less for the ATS Coupe owner. The Complete Car Cost Guide estimates that insurance for the ATS Coupe will cost $660 less than the 4 Series Coupe over a five-year period.

According to The Car Book by Jack Gillis, the ATS Coupe is less expensive to operate than the 4 Series Coupe because typical repairs cost much less on the ATS Coupe than the 4 Series Coupe, including $27 less for a water pump, $247 less for front struts and $562 less for a timing belt/chain.

Recommendations

A group of representative automotive journalists from North America selected the ATS as the 2013 North American Car of the Year. The 4 Series Coupe has never been chosen.

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

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