Cadillac ATS vs. Chevrolet HHR MPG

Chart is based on 7 fuel economy reports for the Cadillac ATS and 393 fuel economy reports for the Chevrolet HHR.

Cadillac ATS MPG

Year	Body/Powertrain	flat, hilly, or mountainousLand	driving style: very light to "lead foot"Foot	A/C use: none to heavyA/C	constant stop and goTraf %	many stops per mileCity %	stop every mile or twoSub %	fairly steady speedHwy %	Hwy Spd	MPG
2014	4dr Sedan turbocharged 272hp 2.0L I4 6-speed shiftable automatic RWD	flat	med	light	0	28	22	49	75	24.6
2013	4dr Sedan 321-horsepower 3.6L V6 6-speed shiftable automatic RWD	flat	med	none	0	0	15	85	80	28.2

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This page shows only averages. See all the Cadillac ATS fuel economy data.

Chevrolet HHR MPG

Year	Body/Powertrain	flat, hilly, or mountainousLand	driving style: very light to "lead foot"Foot	A/C use: none to heavyA/C	constant stop and goTraf %	many stops per mileCity %	stop every mile or twoSub %	fairly steady speedHwy %	Hwy Spd	MPG
2011	4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD	flat	light	light	0	30	10	60	60	15.8
2010	4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD	flat	light	none	11	21	20	48	67	27.2
2009	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	flat	med	light	10	20	30	40	60	29.0
2009	4dr Wagon turbocharged 250hp 2.0L I4 4-speed automatic FWD	flat	med	light	10	10	5	75	75	25.9
2009	4dr Wagon 172-horsepower 2.4L I4 5-speed manual FWD	flat	light	light	5	20	40	35	62	33.4
2009	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	flat	light	light	8	14	30	48	63	28.0
2009	4dr Wagon 155-horsepower 2.2L I4 5-speed manual FWD	flat	light	hvy	10	0	40	50	60	27.9
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2009	4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD	flat	v.lt	none	0	35	24	41	60	28.1
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	flat	med	hvy	0	13	4	83	70	27.1
2008	4dr Wagon turbocharged 250hp 2.0L I4 4-speed automatic FWD	flat	med	none	0	0	20	80	70	27.3
2008	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	flat	med	light	4	23	34	40	71	23.8
2008	4dr Wagon 149-horsepower 2.2L I4 5-speed manual FWD	flat	light	none	25	25	25	25	100	39.5
2008	4dr Wagon 149-horsepower 2.2L I4 4-speed automatic FWD	flat	med	light	8	10	13	70	70	30.1
2007	4dr Wagon 175-horsepower 2.4L I4 5-speed manual FWD	flat	med	none	5	5	50	40	68	29.4
2007	4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD	flat	light	light	6	20	23	51	67	26.2
2007	4dr Wagon 149-horsepower 2.2L I4 5-speed manual FWD	flat	light	none	7	8	14	71	61	31.8
2007	4dr Wagon 149-horsepower 2.2L I4 4-speed automatic FWD	flat	light	none	9	12	17	62	77	29.5
2006	4dr Wagon 172-horsepower 2.4L I4 5-speed manual FWD	flat	light	light	7	15	50	28	63	30.7
2006	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	flat	light	light	5	13	23	59	66	27.1
2006	4dr Wagon 143-horsepower 2.2L I4 5-speed manual FWD	flat	med	light	7	25	23	45	77	29.5
2006	4dr Wagon 143-horsepower 2.2L I4 4-speed automatic FWD	flat	med	light	8	23	21	48	71	27.5

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This page shows only averages. See all the Chevrolet HHR fuel economy data.

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TrueDelta Reviews the Real Gas Mileage of the Cadillac ATS

Cadillac ATS Real Gas Mileage: Cons
Year	Comment
	On paper, the ATS's engines meet or exceed competitors. Even the base 2.5-liter four-cylinder engine peaks at over 200 horsepower, while the 2.0-liter turbo kicks out 272 and the 3.6-liter V6 321. I found the base engine more satisfactory than most reviewers have. But the other two don't feel as strong as their power ratings suggest they ought to, and could also sound and feel more sophisticated and thrilling. They're all fairly good engines, but none of them is a great engine. Fuel economy falls short of the BMW. The 2.0T engine is EPA-rated 19 city, 30 highway with a manual transmission, 21/31 with an automatic. Step up to the V6, and the numbers fall to 18/28. Deduct a couple of highway mpg with AWD. The BMW's ratings are much higher. The 328i's 2.0T engine is rated 22/34 with a manual transmission, 23/33 with a six-speed automatic. The 335i's six-cylinder engine when paired with an eight-speed automatic transmission somehow manages the same EPA rating as the 328i's four-cylinder. In the real world it doesn't fare as well, though. The V6 in the Infiniti in conjunction with a seven-speed automatic transmission is about even with that in the Cadillac, 19/27. Pair it with a manual transmission and the numbers fall to 18/25, worst of the bunch. see full Cadillac ATS review

What Our Members Are Saying about the Real Gas Mileage of the Cadillac ATS

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What Our Members Are Saying about the Real Gas Mileage of the Chevrolet HHR

Chevrolet HHR Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD	Average around 22mpg in the city--and up to 36 on the freeway. Combined driving easily averages 32mpg. see full Chevrolet HHR review
2009	4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD	It gets great fuel economy. I only need to fill the tank approximately every third week. see full Chevrolet HHR review
2009	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	Had a PT that avg. was 19mpg. HHR avg. is 29mpg so far. see full Chevrolet HHR review
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	260hp....260 lb torque....33 mpg highway and 27mpg mixed driving....enough said. Show me another car that matches those numbers. see full Chevrolet HHR review
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	Great gas mileage for a car that is so powerful. see full Chevrolet HHR review
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	RE the HHR SS model, highway mileage with heavy footing out of toll booths with 3 total passengers yielded 27.5 mpg. see full Chevrolet HHR review
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	For as quick as the HHR SS is, the fuel economy nearing 30MPG is phenominal. see full Chevrolet HHR review
2008	4dr Wagon turbocharged 260hp 2.0L I4 5-speed manual FWD	Twice what I was getting in my previous commuter vehicle, and much more fun to drive. see full Chevrolet HHR review
2008	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	30+ MPG on the highway see full Chevrolet HHR review
2008	4dr Wagon 149-horsepower 2.2L I4 5-speed manual FWD	about 30. great see full Chevrolet HHR review

Chevrolet HHR Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2006	4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD	Could be better considering that many larger cars get the same mileage. see full Chevrolet HHR review