Chevrolet SS vs. Mercury Grand Marquis Fuel Economy (L/100km)

Chart is based on 11 fuel economy reports for the Chevrolet SS and 67 fuel economy reports for the Mercury Grand Marquis.

Chevrolet SS L/100km

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	L/100km
2017	4dr Sedan 415-horsepower 6.2L V8 6-speed shiftable automatic RWD	flat	med	light	0	0	50	50	70	14.2

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	L/100km
2010	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	light	0	0	10	90	70	9.3
2009	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	5	5	15	75	70	12.4
2005	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	none	5	5	15	75	60	9.9
2004	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	none	1	3	3	92	73	9.2
2004	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	light	5	5	60	30	70	10.1
2003	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	0	1	12	87	75	10.8
2003	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	light	light	15	26	19	40	68	12.8
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2002	4dr Sedan 235-horsepower 4.6L V8 4-speed automatic RWD	flat	light	light	22	23	23	31	60	10.7
2002	4dr Sedan 220-horsepower 4.6L V8 4-speed automatic RWD	flat	light	hvy	5	25	60	10	60	11.6
2000	4dr Sedan 215-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	0	0	50	50	70	10.9
2000	4dr Sedan 200-horsepower 4.6L V8 4-speed automatic RWD	flat	light	none	1	4	40	55	61	10.9

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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 Grand Marquis Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2008	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	Incredible- 21mpg city, 27mpg HWY see full Mercury Grand Marquis review

Mercury Grand Marquis Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2005	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	The V-8 is thirsty for city driving. The extra power would be nice for highway & mountain driving, though. see full Mercury Grand Marquis review