Certified Benz & Beemer Compares 2015 Mercedes Benz C-Class VS 2015 Cadillac ATS Near Phoenix, AZ

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2015 Mercedes Benz C-Class

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2015 Cadillac ATS

Safety Comparison

For enhanced safety, the front and rear seat shoulder belts of the Mercedes C-Class Sedan have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Cadillac ATS Sedan doesn’t offer pretensioners for the rear seat belts.

For enhanced safety, the front seat shoulder belts of the Mercedes C-Class Sedan are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Cadillac ATS Sedan doesn’t offer height-adjustable front seat belts.

The C-Class Sedan’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The ATS Sedan doesn’t offer a driver alert monitor.

Both the C-Class Sedan and the ATS Sedan have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.

Engine Comparison

The C-Class Sedan has more powerful engines than the ATS Sedan:



C300 Sedan 2.0 turbo 4 cyl.

241 HP

273 lbs.-ft.

C400 Sedan 3.0 turbo V6

329 HP

354 lbs.-ft.

ATS Sedan 2.5 DOHC 4 cyl.

202 HP

191 lbs.-ft.

ATS Sedan 2.0 turbo 4 cyl.

272 HP

295 lbs.-ft.

ATS Sedan 3.6 DOHC V6

321 HP

275 lbs.-ft.

As tested in Car and Driver the C400 Sedan is faster than the Cadillac ATS Sedan:

C-Class Sedan

ATS Sedan 2.0 Turbo

ATS Sedan V6

Zero to 60 MPH

4.7 sec

6.2 sec

5.6 sec

Zero to 100 MPH

11.6 sec

16.5 sec

13.8 sec

5 to 60 MPH Rolling Start

5.5 sec

6.9 sec

5.8 sec

Quarter Mile

13.3 sec

14.8 sec

14.2 sec

Speed in 1/4 Mile

107 MPH

95 MPH

101 MPH

Top Speed

136 MPH

133 MPH

152 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the C-Class Sedan gets better fuel mileage than the ATS Sedan:

C-Class Sedan

ATS Sedan



19 city/30 hwy

2.0 Turbo/Manual


21 city/33 hwy

2.5 4 cyl./Auto


25 city/34 hwy

21 city/30 hwy

2.0 Turbo/Auto


18 city/28 hwy




24 city/31 hwy

20 city/28 hwy

2.0 Turbo/Auto


21 city/29 hwy

18 city/26 hwy


In heavy traffic or at stoplights the C-Class Sedan’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 ATS Sedan doesn’t offer an automatic engine start/stop system.

The C-Class Sedan has 2 gallons more fuel capacity than the ATS Sedan (18 vs. 16 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

The C-Class Sedan stops much shorter than the ATS Sedan:

C-Class Sedan

ATS Sedan

70 to 0 MPH

160 feet

164 feet

Car and Driver

60 to 0 MPH

108 feet

124 feet

Motor Trend

Suspension and Handling Comparison

The C-Class Sedan has a standard automatic load leveling suspension to keep ride height level with a heavy load or when towing. The ATS Sedan doesn’t offer a load leveling suspension.

The C-Class Sedan’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The ATS Sedan doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the C-Class Sedan’s wheelbase is 2.5 inches longer than on the ATS Sedan (111.8 inches vs. 109.3 inches).

For better handling and stability, the track (width between the wheels) on the C-Class Sedan is 3 inches wider in the front than on the ATS Sedan.

The C400 Sedan 4MATIC handles at .88 G’s, while the ATS Sedan pulls only .83 G’s of cornering force in a Car and Driver skidpad test.

The C400 Sedan 4MATIC executes Motor Trend’s “Figure Eight” maneuver quicker than the ATS Sedan (25.9 seconds @ .8 average G’s vs. 26.7 seconds @ .66 average G’s).

Passenger Space Comparison

The C-Class Sedan has .3 inches more rear headroom and 1.7 inches more rear legroom than the ATS Sedan.

Cargo Capacity Comparison

The C-Class Sedan has a much larger trunk than the ATS Sedan (12.8 vs. 10.4 cubic feet).

To make loading and unloading groceries and cargo easier, especially for short adults or children, the C-Class Sedan offers an optional power trunk, which opens and closes automatically by pressing a button, or optionally by just kicking your foot under the back bumper, completely leaving your hands free. The ATS Sedan doesn’t offer a power trunk.

Ergonomics Comparison

Unlike the driver-only memory system optional at extra cost in the ATS Sedan, the C-Class Sedan offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The C-Class Sedan’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the ATS Sedan.

The C-Class Sedan’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The ATS Sedan’s rear power window switches have to be held the entire time to close them fully.

If the windows are left down on the C-Class Sedan the driver can raise them all using the key in the outside lock cylinder or the keyless remote; on a hot day the driver can lower the windows. The driver of the ATS Sedan can only operate the windows from inside the vehicle, with the ignition on.

The C-Class Sedan has a standard locking fuel door with a remote release located convenient to the driver. A locking fuel door helps prevent vandalism, such as sugar in the tank and fuel theft. The ATS Sedan doesn’t offer a locking fuel door.

The C-Class Sedan’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The ATS Sedan’s standard manually variable intermittent wipers have to be constantly adjusted.

A power rear sunshade is optional in the C-Class Sedan to help block heat and glare for the rear passengers. The ATS Sedan doesn’t offer a rear sunshade.

The C-Class Sedan’s optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The ATS Sedan doesn’t offer air conditioned front seats.

The C-Class Sedan’s optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The ATS Sedan doesn’t offer an automated parking system.

Economic Advantages Comparison

The C-Class Sedan will cost the buyer less in the long run because of its superior resale value. Kiplinger’s estimates that the C-Class Sedan will retain a greater percentage of its original price after three and five years than the ATS Sedan.

C-Class Sedan

ATS Sedan

Five Year

33% to 34%

29% to 30%

Three Year

48% to 50%

44% to 45%

Recommendations Comparison

Both the Mercedes C-Class Sedan and Cadillac ATS Sedan won an award in Kiplinger’s 2015 car issue.

The C-Class Sedan was chosen as one of Automobile Magazine’s “All Stars” in 2015. The ATS has never been an “All Star.”

The Mercedes C-Class outsold the Cadillac ATS by almost three to one during 2014.

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