Fiat 500 vs. Mercedes-Benz GL MPG

Chart is based on 144 fuel economy reports for the Fiat 500 and 48 fuel economy reports for the Mercedes-Benz GL.

Fiat 500 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
2015	2dr Hatch turbocharged 160hp 1.4L I4 5-speed manual FWD	flat	lead	hvy	11	11	22	56	80	24.1
2015	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	flat	lead	light	5	20	25	50	75	33.5
2014	2dr Hatch 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	flat	med	hvy	3	28	35	34	75	31.9
2013	2dr Hatch 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	flat	light	light	0	35	60	5	65	30.0
2012	2dr Hatch turbocharged 160hp 1.4L I4 5-speed manual FWD	hills	lead	light	0	30	70	0	0	30.6
2012	2dr Hatch 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	flat	med	light	18	46	15	22	66	29.4
2012	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	mtns	med	light	22	20	4	53	69	38.7
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2012	2dr Convertible 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	hills	med	light	0	0	50	50	75	35.5

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This page shows only averages. See all the Fiat 500 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.

See TrueDelta's information for all Hatchbacks and Convertibles.

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

What Our Members Are Saying about the Real Gas Mileage of the Fiat 500

Fiat 500 Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2015	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	Good fuel economy with manual, but most compacts with auto are more frugal and much faster. see full Fiat 500 review
2015	2dr Hatch turbocharged 160hp 1.4L I4 5-speed manual FWD	Fuel economy on 500s in general is excellent. I have found that the engines are really "tight" when brand new. On my first tank (50/50 city/highway) with the Abarth, I couldn't crack 30 MPG. At 4000 miles, I'm now at 38.8 mpg on the exact same route. The other Fiats I have owned exhibited the exact same behavior. As with the other 500s, I expect a further minor improvement in fuel economy, leveling out at about 5000 miles. see full Fiat 500 review
2014	2dr Convertible turbocharged 160hp 1.4L I4 5-speed manual FWD	Considering it's got a big turbo that I can't help but make use of, I still seem to be averaging an odometer-confirmed 30mpg in mixed driving (high speed mountain freeways and congested city). I've had a few flatter road trips creep into 33mpg territory, and a long run of backroad-strafing dip down to 27. Overall, I'm happy with the economy considering just how fun to drive the car really is. see full Fiat 500 review
2013	2dr Hatch 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	With the Pop Auto trans we are getting 31 mpg avg. see full Fiat 500 review
2013	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	Cheap to Keep! My Fiat 500 Pop with Manual transmission gets 42.5 mpg recorded on my notebook computer over the first two years of ownership. This includes the first day I got the car from the dealership until I stopped bothering to keep records since the on-board computer mpg calculations are with 5/10ths of my own record keeping. To keep this in perspective, I do little straight highway driving. I prefer using back rural roads when possible (highway driving is SO boring!). A couple times a week I drive 20 miles each way and the trip contains 16 full stops at stop sighs or intersections. The terrain is rolling up and down and on these trips without trying the car gets 42 to 43 mpg. If I work at getting the best mileage, I've gotten over 50mpg. True city stop and go traffic hurts and I rarely get over 31mpg until the road opens up a bit. Pure highway driving at 70 mph brings about 40 mpg and slightly less if I hold near 80 mph (maybe 38 mpg but don't do this often enough to get a real average). My wife drives a Nissan Sentra with the Variable Ratio transmission and drven carefully on the highway it can get 36-37 mpg from a bigger and more comfortalbe car. Yet while the Nissan is a very good automobile, it isn't like my 500 for just fun and smiles.The see full Fiat 500 review
2013	2dr Convertible 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	My auto trans Fiat 500c gets 35mpg average over the first year of ownership (done on my computer spreadsheet, not from my head or the car trip compute). I do not do a lot of true city driving (I live in a small town of less than 10,000 folks) nor a lot of true highway driving at high speeds (75-80mph). But when I do go on two or three hour dives (one way) the car does better getting 40mpg. My normal drive one way is 19 to 20 miles with 16 complete stops required (yes, I make full stops not "roll-thru"). On these drives the car computer shows an average of 34-36mpg and that proves to be pretty accurate so I stopped working mpg on a separate spreadsheet. It does take premium fuel so there are better cars for pure mpg than this. But you do get some style for the extra cost. see full Fiat 500 review
2013	2dr Hatch turbocharged 160hp 1.4L I4 5-speed manual FWD	On a longer freeway trip, I averaged about 35 mpg. In most mixed driving (my daily commute is very short, only about 2 miles) I average about 27 mpg. Not bad, especially considering I tend to, um, make the most of that exhaust note. see full Fiat 500 review
2013	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	Fuel economy. I can wring the little thing around all day, up and down hills, revving high etc, and I still have averaged 36mpg over the first 4500 miles. If I drove in a flatland area (Florida) and kept my foot off the gas so much, I could easily get 40+ mpg. see full Fiat 500 review
2013	2dr Hatch 101-horsepower 1.4L I4 5-speed manual FWD	Fuel economy has been excellent with a low of 36.9 and a high of 42.1 MPG with mostly highway driving. Fiat specs the car for 91 octane fuel, although 87 is permitted. I use 93. I have tried most of the major brands and have seen no difference in economy, with the exception of Mobil, which routinely returns a 2MPG improvement over other brands. Not sure why- I had a Hyundai that did the same on BP, so please don't think I am pushing a preference, as I have none, The car is also very sensitive to tire pressure in relation to fuel economy. The factory recommends 38 PSI, 34 rear. I am running 40/36 with no difference in ride quality but slightly improved economy. see full Fiat 500 review
2012	2dr Hatch 101-horsepower 1.4L I4 6-speed shiftable automatic FWD	I'm usually in the 32-35 mpg range with a mixture of city and highway driving. I have to push it a bit to keep up with traffic (101 hp engine) which is probably why it's a bit lower. Fill ups are rarely more than $30. see full Fiat 500 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