Cadillac STS vs. Pontiac G5 MPG

Chart is based on 28 fuel economy reports for the Cadillac STS and 89 fuel economy reports for the Pontiac G5.

Cadillac STS 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
2008	4dr Sedan 320-horsepower 4.6L V8 6-speed shiftable automatic AWD	flat	v.lt	light	0	10	0	90	60	20.1
2008	4dr Sedan 302-horsepower 3.6L V6 6-speed shiftable automatic RWD	flat	med	light	9	11	30	50	73	21.8
2007	4dr Sedan 320-horsepower 4.6L V8 6-speed shiftable automatic RWD	flat	med	light	3	50	20	28	70	22.0
2006	4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic RWD	mtns	light	none	0	0	0	100	65	24.5
2006	4dr Sedan 254-horsepower 3.6L V6 5-speed shiftable automatic RWD	flat	med	light	20	9	10	60	67	20.0
2006	4dr Sedan 254-horsepower 3.6L V6 5-speed shiftable automatic AWD	flat	light	none	0	45	35	20	60	19.0
2005	4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic RWD	flat	med	light	0	3	43	53	67	20.5
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2005	4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic AWD	flat	med	light	10	45	5	40	70	14.6
2005	4dr Sedan 255-horsepower 3.6L V6 5-speed shiftable automatic RWD	flat	light	light	5	20	30	45	60	21.0

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

Pontiac G5 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
2009	2dr Coupe 155-horsepower 2.2L I4 5-speed manual FWD	flat	light	none	5	52	12	32	63	33.5
2009	2dr Coupe 155-horsepower 2.2L I4 4-speed automatic FWD	flat	light	none	0	30	0	70	60	32.0
2008	2dr Coupe 171-horsepower 2.4L I4 5-speed manual FWD	flat	med	light	2	54	7	37	96	25.9
2008	2dr Coupe 171-horsepower 2.4L I4 4-speed automatic FWD	flat	light	none	7	18	0	75	75	27.1
2008	2dr Coupe 148-horsepower 2.2L I4 5-speed manual FWD	hills	med	light	6	16	12	68	90	28.4
2008	2dr Coupe 148-horsepower 2.2L I4 4-speed automatic FWD	flat	med	none	6	26	1	67	111	24.8
2007	2dr Coupe 173-horsepower 2.4L I4 5-speed manual FWD	flat	lead	none	4	20	23	53	75	29.7
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2007	2dr Coupe 173-horsepower 2.4L I4 4-speed automatic FWD	hills	med	none	6	12	20	61	74	25.9
2007	2dr Coupe 148-horsepower 2.2L I4 5-speed manual FWD	flat	med	none	5	50	18	28	98	28.9
2007	2dr Coupe 148-horsepower 2.2L I4 4-speed automatic FWD	flat	light	none	0	0	30	70	70	29.4
2006	2dr Coupe 145-horsepower 2.2L I4 5-speed manual FWD	flat	med	light	2	2	47	50	115	24.4

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This page shows only averages. See all the Pontiac G5 fuel economy data.

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

Cadillac STS Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2006	4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic RWD	16 city/21 highway. Buy it only if you can afford it with out complaining. see full Cadillac STS review
2005	4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic AWD	This car is thirsty. I live in flat country and I get 15 mpg with 80% highway traffic. I only get 19 mpg on trips. It probably needs a 6th speed overdive for the highway. see full Cadillac STS review

What Our Members Are Saying about the Real Gas Mileage of the Pontiac G5

Pontiac G5 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2009	2dr Coupe 155-horsepower 2.2L I4 5-speed manual FWD	best for non-hybrid gasoline see full Pontiac G5 review
2008	2dr Coupe 171-horsepower 2.4L I4 5-speed manual FWD	For a performance model very well average 22-23 mpg city see full Pontiac G5 review
2008	2dr Coupe 148-horsepower 2.2L I4 5-speed manual FWD	24/33 for the manual transmission are pretty good fuel economy numbers. I beat the highway numbers on a long trip by a few points if I keep it at 65 mph (a/c on). see full Pontiac G5 review
2008	2dr Coupe 148-horsepower 2.2L I4 5-speed manual FWD	once broken in and done properlly, and driven with the engine in its proper spot for efficiency in its powerband, its a great fuel efficient car that has tons of power to surprise! see full Pontiac G5 review
2008	2dr Coupe 171-horsepower 2.4L I4 5-speed manual FWD	The Ecotech engine is one of the most economical on the road today. see full Pontiac G5 review
2008	2dr Coupe 171-horsepower 2.4L I4 5-speed manual FWD	I drove fast, all the time, and still averaged 28mpg. see full Pontiac G5 review
2007	2dr Coupe 173-horsepower 2.4L I4 5-speed manual FWD	my G5 is great on gas i put 93 in it and i get 28.6 mpg all city no highway. you cant ask for anything better. the power this car has and great gas miles its the best of both worlds. see full Pontiac G5 review
2007	2dr Coupe 148-horsepower 2.2L I4 5-speed manual FWD	Very good economy even when driving it hard. see full Pontiac G5 review
2007	2dr Coupe 173-horsepower 2.4L I4 5-speed manual FWD	The G5 blends the mileage and power that I was looking for in a car that would do primary duty for commuting to work and back. Was looking to get 30-33 mpg. see full Pontiac G5 review