Chevrolet SS vs. Mercury Mariner MPG

Chart is based on 11 fuel economy reports for the Chevrolet SS and 35 fuel economy reports for the Mercury Mariner.

Chevrolet SS 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
2017	4dr Sedan 415-horsepower 6.2L V8 6-speed shiftable automatic RWD	flat	med	light	0	0	50	50	70	16.8

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

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 SUV 240-horsepower 3.0L V6 6-speed automatic FWD	flat	v.lt	none	30	30	30	10	60	18.9
2009	4dr SUV 240-horsepower 3.0L V6 6-speed automatic FWD	flat	light	light	20	20	30	30	70	20.6
2009	4dr SUV 153-horsepower 2.5L I4 Hybrid CVT FWD	flat	light	light	11	13	31	44	60	35.5
2009	4dr SUV 153-horsepower 2.5L I4 Hybrid CVT AWD	flat	med	light	30	0	10	60	80	32.3
2008	4dr SUV 200-horsepower 3.0L V6 4-speed automatic FWD	flat	light	light	0	45	30	25	70	22.0
2008	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	none	0	8	60	33	60	21.4
2008	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	flat	light	hvy	5	18	55	23	65	30.8
Looking for a warranty? Get a quote.
2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	light	0	3	37	61	63	23.4
2007	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	flat	light	light	11	16	56	18	70	29.8
2006	4dr SUV 200-horsepower 3.0L V6 4-speed automatic FWD	flat	light	light	8	13	35	45	62	23.1
2006	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	med	light	0	0	25	75	75	21.5
2006	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	hills	light	light	16	18	35	31	70	30.6
2005	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	light	0	0	85	15	60	21.0
2005	4dr SUV 153-horsepower 2.3L I4 4-speed automatic AWD	flat	v.lt	light	3	13	8	75	67	22.3

This page shows only averages. See all the Mercury Mariner fuel economy data.

See TrueDelta's information for all Sedans

See TrueDelta's information for all Chevrolet models and Mercury models.

Chevrolet SS Real Gas Mileage: Cons
Year	Comment
	My mention of a $1,300 gas guzzler tax foreshadowed this "why not." If you want a fuel-efficient car, you probably don't want a big, V8-powered sedan. But even compared to the Dodge Charger R/T the SS is a guzzler. This is partly because the very small number sold doesn't justify an upgrade to GM's latest engine and transmission technology, which includes variable valve timing, cylinder deactivation, and eight-speed automatic transmissions. These technologies enable the Charger R/T to earn EPA ratings of 16 mpg city, 25 mpg highway, while the SS can only manage 14/21 with a six-speed automatic or 15/21 with a six-speed manual (which skips from first to fourth under light throttle). In my real-world driving, the trip computer usually reported an average around 16 or 17 in the suburbs (20 if I drove with a very light foot) and MAYBE 24 on the highway. The trip computer in the Dodge reported averages that were usually higher by a couple MPG, but keep its engine in V4 mode (i.e. no lights to stop for) and the average can reach 30. see full Chevrolet SS review

Chevrolet SS Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2017	4dr Sedan 415-horsepower 6.2L V8 6-speed manual RWD	Wow, really, really bad. All the reviews you may have read about the fuel economy are dead on. You can optimistically get 24 on the freeway and low teens city. Then again you are NOT buying this car for fuel economy. see full Chevrolet SS review

Mercury Mariner Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	0 171-horsepower 2.5L I4 6-speed automatic FWD	getting 31 mpg highway see full Mercury Mariner review
2009	4dr SUV 171-horsepower 2.5L I4 6-speed automatic FWD	Has been very good and getting better see full Mercury Mariner review
2009	4dr SUV 240-horsepower 3.0L V6 6-speed automatic FWD	Coming from a Trailblazer, we like the average of 21-22 MPG in mixed driving, as were used to about 17 MPG. Fuel economy climbs toward the rated 26 MPG the more highway driving we do. see full Mercury Mariner review
2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	For the first almost three years after we got the car, it gave 21+ mpg in town & 24+ mpg on the road. see full Mercury Mariner review
2005	4dr SUV 153-horsepower 2.3L I4 4-speed automatic AWD	For an SUV with a 4cyl and 4wd I get avg of 22 MPG mixed city and highway. I usually get 23-26 on freeway only. This is good. see full Mercury Mariner review

Mercury Mariner Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	For some reason when new Michelin All Terrain tires with Nitrogen air replaced the Champions from the factory, it plummeted to 17 & 20 mpg. No explanation from Michelin, Costco or Ford/Mercury - they have no idea why. see full Mercury Mariner review