Honda Insight vs. Mercedes-Benz GL MPG

Chart is based on 262 fuel economy reports for the Honda Insight and 48 fuel economy reports for the Mercedes-Benz GL.

Honda Insight 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
2011	4dr Hatch 98-horsepower 1.3L I4 Hybrid CVT FWD	flat	med	light	12	31	26	32	79	44.7
2011	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	mtns	light	none	1	10	23	66	58	52.9
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid CVT FWD	flat	light	none	3	10	16	71	66	47.0
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	flat	light	light	7	27	24	42	66	45.9
2009.5	4dr Hatch 98-horsepower 1.3L I4 Hybrid CVT FWD	flat	light	light	20	30	30	20	65	45.8
2006	2dr Hatch 73-horsepower 1.0L I3 Hybrid CVT FWD	flat	v.lt	hvy	1	1	1	97	60	59.9
2005	2dr Hatch 73-horsepower 1.0L I3 Hybrid 5-speed manual FWD	flat	med	none	0	0	40	60	60	50.0
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2001	2dr Hatch 73-horsepower 1.0L I3 Hybrid 5-speed manual FWD	hills	light	light	0	20	25	55	63	59.1
2000	2dr Hatch 73-horsepower 1.0L I3 Hybrid 5-speed manual FWD	flat	light	light	13	15	30	43	80	61.4

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This page shows only averages. See all the Honda Insight fuel economy data.

Mercedes-Benz GL 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 SUV turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	1	4	15	80	65	27.3
2011	4dr SUV 382-horsepower 5.5L V8 7-speed shiftable automatic AWD	flat	light	hvy	1	49	20	30	70	15.0
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	7	13	34	46	64	24.0
2009	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	13	60	27	72	22.5
2009	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	21	22	27	30	60	18.0
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	6	23	31	41	71	22.4
2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	flat	med	hvy	13	30	28	30	83	17.0
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2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	none	21	21	23	35	85	17.3
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	hills	light	light	3	12	22	64	67	25.3
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	hills	med	light	15	21	22	42	60	16.0
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	9	16	38	38	65	17.4

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

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TrueDelta Reviews the Real Gas Mileage of the Honda Insight

Honda Insight Real Gas Mileage: Pros
Year	Comment
2020	Honda's initial approach to hybrid powertrain technology wasn't a winner. A weak electric motor (13 horsepower in the case of the 2010 Insight) sandwiched between a gas engine and a CVT wasn't able to deliver nearly as much of a performance or fuel economy bump as the much stronger electric motors in Toyota's radically different hybrid system. Starting with the 2014 Accord Hybrid, Honda tried a new approach. The new system relied entirely on a much more powerful (166 horsepower) electric motor to drive the wheels up to 43 mph, and only then directly engaged the gas engine via a single-speed transmission. This was the sort of elegant "we keep it simple" solution Honda used to be known for, and it worked far better. EPA ratings of 50 mpg city and 45 mpg highway were best-in-class, topping the Toyota Camry Hybrid. This system received further tweaks when the Accord was redesigned for 2018, with mixed results for mpg (now 48/47). The Toyota Camry, also redesigned for 2018, now scores 51/53 or 44/47 depending on trim level. When I learned that a new Honda Insight would utilize a similar hybrid system with a 1.5-liter engine instead of the Accord's 2.0-liter in a smaller, lighter car, I had high hopes. Could a 60-mpg rating happen? Well, it didn't. The Honda Insight LX and EX score 55 mpg city and 49 mpg highway in the EPA's testing. The tested Touring trim, with larger tires and a higher curb weight, scores a little lower, 51/45. Pretty good. But a Toyota Prius (58/53 or 54/50, depending on the variant), a Toyota Corolla Hybrid (53/52), or a Hyundai Ioniq (57/59 or 55/54) scores better. In my testing, the trip computer reported averages ranging from 45 mpg to 75 mpg in suburban driving. (Whether the system opts to charge or draw energy from the battery pack has a big effect on the reported average during short drives.) In one 20-mile drive around hilly Ann Arbor the trip computer reported an impressive 64 mpg--and 93.6 mpg during the initial three miles. But in a Toyota Prius I averaged 65 mpg over the entire week despite some colder weather--it struggled to top 60 when the air temperature fell to 40--and observed trip averages over 90 a couple of times. Air temperatures were usually in the 60s during the week I had the Insight, optimal for fuel economy. The Honda Insight disappointed in highway driving. When cruising near 80 mph, a speed at which it can't take much advantage of its hybrid configuration, the Insight averaged 40 mpg. Good, but little better than a non-hybrid Civic. I observed a bit over 60 mpg on the highway in the Prius. Given these results, I struggled with listing fuel economy among the reasons to buy the new Insight. On the one hand, all of its direct competitors have higher EPA ratings. On the other, the Insight's mpg compares very well to non-hybrids, and fuel economy will be a primary reason people buy one. see full Honda Insight review

What Our Members Are Saying about the Real Gas Mileage of the Honda Insight

Honda Insight Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Averaging 45mpg see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	40-45mpg. Slower you drive, better the milage see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	It gets better than advertised. 44 in town, 44 highway see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Just about the same as the Prius. Look at Fuelly.com and see for yourself. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Fantastic! Driven frugally, I am getting 46mpg at 60/40 hwy/city driving. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	getting 52mpg highway and about 46 city, maybe someone at toyota paid off the epa to rate this car low, because i have NEVER gotten under 45 mpg on the highway. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Econ Mode for just a three mile drive and got 53 mpg though traffic was very light. Afterwards during normal traffic driving, not using the Econ Mode, plus a very short drive 1/2 mile up and 1/2 mile back I got 36 mph engin cold. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Great gas mileage. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	The highest available at time of purchase. see full Honda Insight review
2010	4dr Hatch 98-horsepower 1.3L I4 Hybrid 7-speed shiftable CVT FWD	Getting near 50 MPG is fantastic after owning several cars that barely got 20 MPG. see full Honda Insight review

TrueDelta Reviews the Real Gas Mileage of the Mercedes-Benz GL

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Comment
2013	In the EPA's fuel economy tests the Mercedes-Benz GL350 BlueTEC rates 19 mpg city and 26 mpg highway. We observed low 20s in casual suburban driving (a few mpg lower with a heavy foot, a few mpg higher with a very light one) and 25.5 on our trip to Chicago and back (which included some heavy urban driving and 70-mph highways). These numbers don't seem so great, given that the GL350 burns diesel? Consider that the GL-Class is not only wide and tall but also very heavy, at nearly 5,500 pounds unloaded. The gas-powered GL450 is rated 14/19. Our family vehicle, a Ford Taurus X that weighs over 1,000 pounds less than the Mercedes, struggles to crack 22 on the highway. The Audi Q7 rates the same in city driving, and a couple mpg better on the highway. Since the GL350 is almost in another class size-wise, I'm calling this one a draw. Multiply this fuel economy by a 26.4-gallon tank, and the GL350 can go quite far between $100+ fill-ups. Is it really possible to drive the nearly 300 miles to Chicago--and then back--on one tank? Yes it is, with nearly a quarter-tank to spare. (Is it possible to do this without any of three kids needing to stop for a bathroom break? To our even greater surprise, yes to this as well. They were busy watching the $1,950 dual-screen entertainment system.) see full Mercedes-Benz GL review

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

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	For a large, seven passenger SUV it can deliver upwards of 28 mpg on the highway. see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	25 mpg highway fuel efficiency for a large 7 passenger SUV is fantastic see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	Diesel provides 25 MPG on the highway see full Mercedes-Benz GL review

Mercedes-Benz GL Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2010	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	15 mpg average. premium fuel. see full Mercedes-Benz GL review