Mercedes-Benz R-Class vs. Audi A6 / S6 / RS6 Fuel Economy (L/100km)

Chart is based on 37 fuel economy reports for the Mercedes-Benz R-Class and 229 fuel economy reports for the Audi A6 / S6 / RS6.

Mercedes-Benz R-Class 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
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	10	15	35	40	75	9.9
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	hills	med	light	0	0	45	55	71	11.6
2008	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	flat	med	light	2	34	21	44	74	11.8
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	3	24	27	45	83	9.6
2007	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	flat	light	none	13	23	38	26	65	14.7
2006	4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD	flat	med	none	23	40	18	19	70	15.8
2006	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	flat	med	light	6	22	24	48	68	12.0

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

Audi A6 / S6 / RS6 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
2018	4dr Sedan supercharged 340hp 3.0L V6 8-speed shiftable automatic AWD	flat	med	hvy	5	5	35	55	65	7.8
2016	4dr Sedan supercharged 333hp 3.0L V6 8-speed shiftable automatic AWD	flat	med	none	0	10	5	85	80	7.5
2014	4dr Sedan supercharged 310hp 3.0L V6 8-speed shiftable automatic AWD	flat	med	hvy	0	10	50	40	80	8.8
2013	4dr Sedan turbocharged 420hp 4.0L V8 7-speed automated manual AWD	flat	med	light	0	100	0	0	0	13.6
2013	4dr Sedan supercharged 310hp 3.0L V6 8-speed shiftable automatic AWD	hills	lead	none	0	10	25	65	70	10.5
2012	4dr Sedan supercharged 310hp 3.0L V6 8-speed shiftable automatic AWD	flat	med	none	10	0	0	90	65	7.4
2011	4dr Sedan supercharged 300hp 3.0L V6 6-speed shiftable automatic AWD	flat	med	hvy	30	45	10	15	70	9.9
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2010	4dr Wagon supercharged 300hp 3.0L V6 6-speed shiftable automatic AWD	flat	med	light	10	20	40	30	75	9.4
2010	4dr Sedan supercharged 300hp 3.0L V6 6-speed shiftable automatic AWD	flat	med	light	9	6	20	65	88	9.7
2008	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	flat	med	none	15	20	25	40	65	11.9
2007	4dr Wagon 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	flat	med	light	0	11	40	49	75	11.7
2007	4dr Sedan 435-horsepower 5.2L V10 6-speed shiftable automatic AWD	flat	med	light	30	50	5	15	70	19.4
2007	4dr Sedan 350-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	10	5	20	65	70	11.5
2007	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	hills	light	light	3	10	34	55	63	9.5
2006.5	4dr Sedan turbocharged 140hp 2.0L I4 Diesel 6-speed manual FWD	flat	v.lt	none	5	0	0	95	60	5.6
2006	4dr Wagon 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	flat	med	light	16	17	22	44	78	10.0
2006	4dr Sedan 335-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	none	1	2	34	63	82	12.4
2006	4dr Sedan 255-horsepower 3.1L V6 7-speed shiftable CVT FWD	flat	med	hvy	30	20	20	30	80	8.2
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	flat	med	light	8	14	16	62	77	9.6
2005	4dr Sedan 335-horsepower 4.2L V8 6-speed shiftable automatic AWD	flat	med	light	1	4	28	67	77	13.1
2005	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	flat	med	light	11	13	23	54	81	11.2
2004	4dr Sedan 300-horsepower 4.2L V8 5-speed shiftable automatic AWD	flat	med	none	25	25	25	25	75	13.0
2004	4dr Sedan 265-horsepower 2.7L V6 5-speed shiftable automatic AWD	flat	med	light	4	25	17	54	70	11.5
2004	4dr Sedan 220-horsepower 3.0L V6 5-speed shiftable automatic AWD	flat	med	none	5	0	0	95	68	11.7
2003	4dr Wagon 340-horsepower 4.2L V8 5-speed shiftable automatic AWD	flat	lead	hvy	20	20	30	30	80	14.7
2003	4dr Sedan turbocharged 450hp 4.2L V8 5-speed shiftable automatic AWD	flat	med	light	2	5	22	72	75	11.5
2003	4dr Sedan turbocharged 250hp 2.7L V6 6-speed manual AWD	flat	med	none	0	20	30	50	75	10.7
2003	4dr Sedan turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD	flat	light	light	5	7	12	76	70	10.8
2003	4dr Sedan 300-horsepower 4.2L V8 5-speed shiftable automatic AWD	hills	med	light	13	8	15	65	90	11.3
2003	4dr Sedan 220-horsepower 3.0L V6 5-speed shiftable automatic AWD	flat	light	light	16	13	30	40	88	11.6
2002	4dr Wagon 220-horsepower 3.0L V6 5-speed shiftable automatic AWD	flat	light	light	15	15	10	60	60	11.0
2002	4dr Sedan turbocharged 250hp 2.7L V6 6-speed manual AWD	flat	med	none	35	14	9	44	75	14.7
2002	4dr Sedan turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD	flat	med	light	12	32	13	43	66	12.7
2002	4dr Sedan 300-horsepower 4.2L V8 5-speed shiftable automatic AWD	flat	light	light	6	20	29	45	62	12.3
2002	4dr Sedan 220-horsepower 3.0L V6 6-speed shiftable CVT FWD	flat	med	light	10	40	10	40	70	9.8
2002	4dr Sedan 220-horsepower 3.0L V6 5-speed shiftable automatic AWD	flat	light	hvy	10	30	50	10	65	12.7
2001	4dr Sedan turbocharged 250hp 2.7L V6 6-speed manual AWD	flat	med	light	3	33	58	8	75	11.1
2001	4dr Sedan turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD	flat	med	none	4	12	29	55	71	11.4
2001	4dr Sedan 200-horsepower 2.8L V6 5-speed shiftable automatic AWD	hills	med	hvy	10	30	28	33	65	11.1
2000	4dr Wagon 200-horsepower 2.8L V6 5-speed shiftable automatic AWD	hills	med	hvy	10	30	10	50	65	11.8
2000	4dr Sedan turbocharged 250hp 2.7L V6 6-speed manual AWD	flat	med	none	10	20	10	60	120	11.3
2000	4dr Sedan 200-horsepower 2.8L V6 5-speed shiftable automatic FWD	hills	light	light	45	20	5	30	60	14.3
2000	4dr Sedan 200-horsepower 2.8L V6 5-speed shiftable automatic AWD	hills	med	none	8	23	35	33	72	11.2

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This page shows only averages. See all the Audi A6 / S6 / RS6 fuel economy data.

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What Our Members Are Saying about the Real Gas Mileage of the Mercedes-Benz R-Class

Mercedes-Benz R-Class Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	Excellent. We average 27 on the highway travelling at 70+mph see full Mercedes-Benz R-Class review
2009	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	Pleasantly surprised by first tankful. 16.2 mpg in the city. Mostly used "comfort" setting which starts out in 2nd gear and shifts early. With this nonaggressive profile, city driving economy is improved. Premium gives better gas mileage than regular (about 5% on comparable tankfuls). On Comfort setting, no difference in performance is noted. see full Mercedes-Benz R-Class review
2008	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	It easily gets to 20 mpg on highway. About 18 on mixed driving see full Mercedes-Benz R-Class review
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	Excellent fuel economy with the diesel, especially when driven gently. Also amazing power at the same time see full Mercedes-Benz R-Class review
2007	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	15mpg city....25 mpg highway....combined is around 17-18 mpg. Not bad considering how heavy this car is. Of course i am very light to the pedal trying to keep my mpg high. Gas is too expensive nowadays so if i don't need to be fast, i am keeping it steady. see full Mercedes-Benz R-Class review
2006	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	Much better than expected for a very large and long vehicle. Close to 25MPG on longer trips. see full Mercedes-Benz R-Class review

Mercedes-Benz R-Class Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2007	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	15 mpg average. Not good see full Mercedes-Benz R-Class review
2007	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	Pretty poor for a 3.5L. see full Mercedes-Benz R-Class review
2007	4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD	F-E is poor because of the weight to power ratio. The vehicle is heavy. With the available power, it is easy to drive faster and to maneuver through slower traffic. Frequent acceleration results in lower gas mileage. see full Mercedes-Benz R-Class review
2006	4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD	I would probably choose a diesel next time for efficiency reasons - but the additional premium fuel required in the V6 is negligible once the car is paid for....soon now. Very lively engine too. I foresee a hybrid R class type vehicle after 2011... see full Mercedes-Benz R-Class review
2006	4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD	only 17 mpg highway see full Mercedes-Benz R-Class review

What Our Members Are Saying about the Real Gas Mileage of the Audi A6 / S6 / RS6

Audi A6 / S6 / RS6 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2008	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	It is @ least 4 mpg better hwy & city see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	It's hard to imagine such a powerful luxury car can get such great gas mileage. On a recent trip to Montreal I calculated my fuel economy to be somewhere in the 27mpg range....incredible! see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	better then 28 mpg on highway due to transmission gearing see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	Despite the performance of the A6 3.2 it delivers great mpg for such a large car. It excels on the open road. With cruise it is possible to achieve a range of 650+ miles on a tankful. see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	With the FSI and V6, I regularly see 27 mpg in city. And arround 30-32 mpg highway (no A/C on, and cruising at 80 mph). see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	21=22 mpg in cit/commute/highway driving -- pretty good for a large luxury car that weighs 4000+ pounds. see full Audi A6 / S6 / RS6 review
2004	4dr Sedan 220-horsepower 3.0L V6 6-speed shiftable CVT FWD	Typically 22-24 in-town and 29-31 on the road. Excellent economy for car size and level of comfort. see full Audi A6 / S6 / RS6 review

Audi A6 / S6 / RS6 Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2006	4dr Wagon 255-horsepower 3.1L V6 6-speed shiftable automatic AWD	Poor relative to power see full Audi A6 / S6 / RS6 review
2006	4dr Sedan 335-horsepower 4.2L V8 6-speed shiftable automatic AWD	this is not a car to be used as a city daily driver -- the best mpg you will get in all city driving is 12mpg see full Audi A6 / S6 / RS6 review
2002	4dr Sedan turbocharged 250hp 2.7L V6 6-speed manual AWD	For a car that requires 91+ octane, it would be nice if it got better gas mileage in city driving (around 16-18 mpg). The mileage on the highway is much better (up to 26 mpg). see full Audi A6 / S6 / RS6 review