BMW 6-Series vs. Mercedes-Benz SLK Fuel Economy (g/100m)

Chart is based on 11 fuel economy reports for the BMW 6-Series and 18 fuel economy reports for the Mercedes-Benz SLK.

BMW 6-Series g/100m

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	g/100m
2014	2dr Coupe turbocharged 445hp 4.4L V8 8-speed shiftable automatic RWD	flat	lead	light	5	11	11	74	70	5.6
2008	2dr Convertible 360-horsepower 4.8L V8 6-speed shiftable automatic RWD	flat	light	hvy	45	9	18	27	60	5.5
2006	2dr Convertible 255-horsepower 3.0L I6 6-speed manual RWD	flat	med	none	3	20	3	75	72	2.7
2005	2dr Coupe 325-horsepower 4.4L V8 6-speed shiftable automatic RWD	flat	lead	light	10	35	40	15	60	6.0
2005	2dr Coupe 325-horsepower 4.4L V8 6-speed manual RWD	flat	lead	hvy	0	0	40	60	80	5.1
2004	2dr Coupe 325-horsepower 4.4L V8 6-speed shiftable automatic RWD	flat	lead	hvy	0	10	20	70	120	26.6
2004	2dr Coupe 325-horsepower 4.4L V8 6-speed manual RWD	flat	med	none	0	0	0	100	120	23.1

This page shows only averages. See all the BMW 6-Series 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	g/100m
2009	2dr Hardtop conv. 355-horsepower 5.4L V8 7-speed shiftable automatic RWD	flat	med	light	0	10	20	70	100	25.4
2009	2dr Hardtop conv. 300-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	med	hvy	0	5	45	50	65	4.8
2008	2dr Hardtop conv. 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	mtns	lead	light	5	5	10	80	75	3.9
2007	2dr Hardtop conv. 228-horsepower 3.0L V6 7-speed shiftable automatic RWD	flat	med	none	13	13	8	68	95	15.7
2006	2dr Hardtop conv. 355-horsepower 5.4L V8 7-speed shiftable automatic RWD	flat	light	light	2	10	3	85	70	4.3
2006	2dr Hardtop conv. 228-horsepower 3.0L V6 7-speed shiftable automatic RWD	flat	med	hvy	10	10	20	60	70	4.1
2005	2dr Hardtop conv. 268-horsepower 3.5L V6 7-speed shiftable automatic RWD	flat	med	light	10	25	12	53	66	4.5
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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	4.2
2003	2dr Hardtop conv. supercharged 192hp 2.3L I4 5-speed shiftable automatic RWD	flat	med	light	0	5	16	79	72	3.8
2001	2dr Hardtop conv. 215-horsepower 3.2L V6 5-speed shiftable automatic RWD	flat	med	light	1	15	35	50	63	4.0

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

See TrueDelta's information for all Coupes and Convertibles.

See TrueDelta's information for all BMW models and Mercedes-Benz models.

None of our members have yet commented on the real gas mileage of the BMW 6-Series.

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