2013 Cadillac ATS 2.0T rated by EPA at 21/31 mpg

Article by Christian A., on September 26, 2012

The arrival of the 2013 Cadillac ATS in dealerships marks the completion of the listing of baby Caddy’s engines in the fuel economy area. This popular engine choice has an EPA-estimated rating of 21/31 mpg city/highway with rear-wheel drive and an automatic transmission. With this rating, it’s apparent that the base 2.5-liter four in the ATS is primarily a leader when it comes to costs compared with the 2.0T.

The 2.5 gains only one mpg in the city and two on the highway. As expected, the big 3.6-liter is engine in the ATS range with the highest fuel consumption since it returns only 19/28 mpg. The turbo-four and the V-6 are both offered with all-wheel drive, which lowers the 2.0T’s ratings by one mpg in the city and on the highway. It also drops the 3.6′s rating to 18/26 mpg.

These numbers are for ATS models that have the six-speed automatic. Testing for the six-speed manual in the 2.0T has yet to be done. Cadillac’s 21/31 number for the ATS 2.0T is lower than BMW 328i’s 23/33 rating when it uses an eight-speed automatic. But then, the ATS 2.0T produces an additional 32 hp from its turbo-four compared to the BMW.

The ratings of Cadillac’s new sport sedan don’t exceed those of the BMW but then, the turbo-four ATS has significantly more power than the Lexus IS 250, Mercedes-Benz C250, and Volvo S60 T5. It also offers fuel economy figures that are just about the same as the others. The ATS 2.0T is priced lower than rivals except for the Audi A4 and Volvo S60 T5.

The ultimate criterion and the guiding principle behind the development of the Cadillac ATS is to make it one of the segment’s lightest cars. It was done in a subtle manner to guarantee an advanced driving experience.

ATS chief engineer, David Masch said that lighter weight makes the Cadillac ATS more controllable and nimble, while at the same time enhancing the powertrain’s efficiency. Careful management of the weight was done in order to maintain the signature levels of refinement Cadillac has.

Enhancing the Cadillac ATS’s weight was the product of a four-pronged principle that involved evaluating gears to see if lighter solutions were feasible, calculated load management all over the automobile, stringent adherence to original architectural objectives, and an overall system that "weighed" the mass of every gear in the automobile against all features of its development.

Magnesium powertrain mount brackets, aluminum hood and even natural-fiber door trim panels that are lightweight helps to achieve the low overall mass of the Cadillac ATS. These also show the systematic approach of measuring every gram that goes into the automobile. However, the principle does not apply in all cases because some weights are not only considered beneficial, but vital to the car’s driving experience. For instance, engineers discovered they could enhance fuel economy with cast iron differential instead of a lighter version of aluminum.

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