2012 merc amg

According to the Window Sticker the gas mileage is only rated 16 mpg city and 22 Highway, thats no better than my 2012 and that car had just the 7 speed auto instead of the 9 speed plus last I knew the 2018 E63 AMG also had cylinder deactivation which should help out. Maybe the AWD system is sucking up some of the MPG. I'll let you all know what I end averaging for MPG in my new Red Wagon. My 2015 S550 is starting to look better all the time, I can get 26 MPG highway in that car and it's a bigger more heavy car, has 449 HP so it scoots along pretty good. Well, maybe once I break in this AMG and can start driving it more the way it's meant to be driven my feelings with this car will change.

Quickburn7

500 miles in I’m averaging between 8 and 12mpg mostly city driving.
I do have a heavy foot and that is while obeying the break in procedure.
so far love this car... it has a few quirks but it’s very worth it for a daily driver!

2012 merc amg

I'll be in the car 5 hours today heading up north to NH. This will give me a better feel for the car. I'm going very easy on the rear end brake in procedure, all highway driving varying my speeds between 50 and 65 mph. The electronics in this car are a lot of fun to play around with, sat in the garage last night for a while playing with settings and setting up things including the home link. Already have mercedes me app setup too, the remote start is great. Well I guess I did not buy this car for gas mileage, mainly performance and it does have all of that.

E63guy

It never occurred to me that a 600+ HP car would achieve anything resembling "good" mileage, nor come close to matching the stated rating. Not sure why one would buy this car believing otherwise.

E634Me

Jeez, now you tell me? I'm supposed to sign the paperwork tonight in advance of leaving for Germany next week to pick up the car. Now I'm having second thoughts.

NOT!

Can hardly be worse than my Jeep or F-250. I have just over a four mile commute to work up and over a couple of fairly large hills no matter which way I go. The F-250 diesel actually does a fairly good job on the highway (~21) and around town (~15) once its warmed up, but it never gets up to any useful temp on the way to work and back, so 12 mpg is pretty typical in that scenario. At least it is tuned and can get out of its own way. I ran a 14.33 the final weekend before they closed the Carlsbad drag strip. Not bad for a 7850 lb truck

The Jeep averages around 12 for my short trips, and it has no power.

If I get similar mileage but have the benefit of gobs of power that would be a huge upgrade

2012 merc amg

Well I can’t complain I guess. I’m up to 200 miles now on the car and have a 22 mpg average. I’m very easy on cars. I want to break this car in right. It is critical for that rear end to wear in properly on these cars.

stealth.pilot

That sounds pretty good to me.

BTW Is there a gas guzzler tax?

ItalianJoe1

My V12 CL gets horrible gas mileage too... comes with the territory on a 600hp, 5000lb car.

I can't seriously believe anyone spending 120K+ on an E class cares about gas mileage.

2012 merc amg

No I think they dodge the gas guzzler tax on this car. I just wonder if there really is cylinder deactivation on this car though because this car gets about the same gas mileage as my 2012 e63 amg which of course did not have cylinder deactivation. It sure feels like it’s running on all 8 all the time. No 4 cyl vibrations. Maybe it’s pissible to activate cyl deactivation. Having and accepting a car that is not efficient is not the modern way of thinking. Look at Tesla’s car. Fast yet efficient. It’s possible with gas engines too given the right technology. Gonna suck up all our resources is old school thing. I use to own muscles cars with big block motors and dual quads that got like 6 mpg. To me that is environmental irresponsible mainly from a health point of view and secondary the environment. I’ll have to look into the possibility of activating cyl deactivation with the Star tool if it is not present as is.

2001_S15

I don't care about the price of gas, but I care about range. The time of most people buying $120K+ cars is pretty valuable.

2012 merc amg

That is True too. I use to have a CTS-V Wagon and it held 18 gallons and averaged around 13 mpg. Was putting gas in that car every 180 to 200 miles. I believe the new Amg
holds 21 gallons give it a highway range of probably a shade under 400 miles if you went the speed limit, not bad.

stealth.pilot

If they dodge the gas guzzler tax then it can't be that bad. I was looking at a 2018 911 GT3 the other day and even that had a gas guzzler tax.

stealth.pilot

If they dodge the gas guzzler tax then it can't be that bad. I was looking at a 2018 911 GT3 the other day and even that had a gas guzzler tax. That was rated 15 city, 20 highway; 17mpg combined.

E63guy

There's a light on the dash screens that comes on whenever it's in 4 cyl mode. Saw it while test driving an Edition 1. I *believe* that certain driving modes (maybe Sport+?) deactivate it entirely, leaving you with 8 cylinders at all times, though I'm not positive.

Agreed that to me range is a far bigger concern than the cost of tanking up. Is 21 gallons confirmed? That's decent, though I'd prefer 25 given the mileage.

2012 merc amg

21.1 gallons confirmed. Cool about the light didn't know that. Thats all I'm saying is surprised its not better on gas when driving highway at speed limits, gets around the same as my 212, although it does have more power.

E634Me

The terrain and traffic does have a bit to do with it too. When I lived back East in Northern VA, the terrain was flatter than here where I live in So Cal. When I used to go out on the weekend for a bicycle ride I'd only accumulate like 400 ft of climbing in a 50 mile ride. Here in Carlsbad I do more than that on the 5 mile ride to work.

Assuming Mercedes gets it right, the cylinder deactivation/reactivation should be pretty seamless. I can feel it happening on my Honda Odyssey sometimes, but the 2015 version is much better about it then the 2005 model we had. But the feature only works up to 80 MPH, which means it doesn't get used much on the highway because the speeds on the I-5 and I-15 around here are usually in that ball park except for rush hours.

Bueller

The cylinder deactivation is indeed seamless. The only way you know it’s happening is the light on the dash. Ditto with glide mode, all you will see is a sailboat sail icon on the dash. I believe both only work in C mode AND eco start/stop is activated.

It’s only been 2 months since I last drove it

Like many here I’m still waiting for US delivery.

E63guy

Yeah I couldn't tell when cylinders were deactivated except by looking at the light on the dash. What is glide mode though - don't recall the SA mentioning it, nor noticing a sailboat icon. Is that just coasting basically?

E634Me

That is where at certain speeds the transmission and clutch decouple and let you coast when you let off the throttle. This is another fuel saving technique.

I used to do that as a kid when trying to save gas and stretch my $1.72/hour wage as far as I could

E63guy

Heh - yeah me too Shift into neutral while downhill on the interstates...

2012 merc amg

I use to have a VW I use to do that with, certain auto's it's fine to do that like the VW, other ones like a chevy or ford automatic it's hard on the trans gliding in neutral and can even trip a check engine light.

I hope the gas mileage gets a little better once my new AMG is broken in, right now it's just little bit worse than my 2012 AMG which was of course 54 less HP I know. I just figured with all these fuel saving features I'd be around mid 20's on easy highway driving. I leave with the car for Florida tomorrow from the Northeast, I'll keep you all posted, looking forward to the drive.

2012 merc amg

Managed to average 24.7 mpg today loafing along at 65 on my trip to Florida. Up to 1200 miles now car is running like a charm. Still have to taking the car beyond half throttle. I’ll pick up the pace on the car before the 2k gear oli change. Break in is important. I don’t want to get stuck with a axle gear whine the rest of my life lol

E63guy

That's surprisingly good mileage IMO. Can't imagine how tough it is to keep it to 65 though!

Are the break in procedures published anywhere?

2012 merc amg

And that was with the distronic on. To get really good mileage. Say you were low on gas and trying to get to the next station turn distronic off and you open up the exhaust with the button on the center console and go 63 mpg and on the flat this car will get around 30 mpg. According to the readout. You can tell I’m bored and looking for things to try on this trip to Florida lol . 3 day drive.

E634Me

I would like to find a soft copy of the manual to study in advance of pick up next Monday.

Will be asking the tech in Germany a lot of questions and break in is high on my list. I expect to put pretty close to 1000 miles on the car in hopes of being able to open it up legally on the autobahn a few times before it is shipped home.

A 1000 miles is longer than my diesel truck’s break in restriction. That was 600 miles before towing.