Audi A7 / S7 / RS7 vs. Mercedes-Benz SLK MPG

Chart is based on 45 fuel economy reports for the Audi A7 / S7 / RS7 and 18 fuel economy reports for the Mercedes-Benz SLK.

Audi A7 / S7 / RS7 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 Hatch turbocharged 560hp 4.0L V8 8-speed shiftable automatic AWD	flat	med	light	4	1	20	75	65	21.2
2012	4dr Hatch supercharged 310hp 3.0L V6 8-speed shiftable automatic AWD	mtns	med	none	0	8	3	89	66	29.1

This page shows only averages. See all the Audi A7 / S7 / RS7 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
2009	2dr Hardtop conv. 355-horsepower 5.4L V8 7-speed shiftable automatic RWD	flat	med	light	0	10	20	70	100	21.8
2009	2dr Hardtop conv. 300-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	med	hvy	0	5	45	50	65	21.0
2008	2dr Hardtop conv. 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	mtns	lead	light	5	5	10	80	75	25.5
2007	2dr Hardtop conv. 228-horsepower 3.0L V6 7-speed shiftable automatic RWD	flat	med	none	13	13	8	68	95	25.6
2006	2dr Hardtop conv. 355-horsepower 5.4L V8 7-speed shiftable automatic RWD	flat	light	light	2	10	3	85	70	23.4
2006	2dr Hardtop conv. 228-horsepower 3.0L V6 7-speed shiftable automatic RWD	flat	med	hvy	10	10	20	60	70	24.7
2005	2dr Hardtop conv. 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	med	light	10	25	12	53	66	23.2
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2005	2dr Hardtop conv. 268-horsepower 3.5L V6 6-speed manual RWD	flat	lead	none	0	0	10	90	75	24.0
2003	2dr Hardtop conv. supercharged 192hp 2.3L I4 5-speed shiftable automatic RWD	flat	med	light	0	5	16	79	72	26.2
2001	2dr Hardtop conv. 215-horsepower 3.2L V6 5-speed shiftable automatic RWD	flat	med	light	1	15	35	50	63	25.3

This page shows only averages. See all the Mercedes-Benz SLK fuel economy data.

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Audi A7 / S7 / RS7 Real Gas Mileage: Pros
Year	Comment
2014	Now for the second half of the Audi A7 TDI's one-two punch: its diesel engine. No one denies the efficiency of diesels, and the latest Audi V6 doesn't disappoint. In the EPA's tests the TDI achieves 24 mpg city, 38 mpg highway. The gas engine's 18/28 ratings are impressive for a powerful gas V6 in a heavy all-wheel-drive car, but are no match for the diesel's. In my real-world driving the A7 TDI's trip computer generally reported mid-30s in the suburbs and about 40 on the highway (a little under this number on 70-mph Interstates, a little over it where speed limits were lower). Diesel can be unpleasant to put in the car--it's slimy and does not evaporate if spilled like gas does--but the A7 TDI can go up to 800 miles between fill-ups. In comparison, the gas V6 manages low 20s in the suburbs and high 20s on the highway. This said, the competing diesel from BMW is even more efficient. see full Audi A7 / S7 / RS7 review

None of our members have yet commented on the real gas mileage of the Audi A7 / S7 / RS7.

Mercedes-Benz SLK Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2005	2dr Hardtop conv. 355-horsepower 5.4L V8 7-speed shiftable automatic RWD	clearly AMG was not thinking gas mileage at all when they built this engine see full Mercedes-Benz SLK review