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Is it me or this car drinks gas like nobody’s business?
I drove the car only 1000km and I filled her up 3 times already. So that’s 4 tanks of gas to do 1000km. Averaging around 18L/100km so far.
Just wanted to know if this is normal? Cause EPA combined was 11.7 L/100km, and it is nowhere near that.
I noticed in comfort mode, it changes the gear up pretty late, once it settles down, otherwise it holds on to the lower gears for quite a bit. Is that a facelift thing?
Average 15 l/100km (= 15 mpg) over the last 60.000km. This includes more than a few miles on the German Autobahn bouncing of the topspeed-limiter at 280km/h (175mph).
My average is also around 15 mpg (15L/100km) for my daily use.
I just want to mention that your fuel consumption is closely related to the way you drive, more specifically, your engine RPM. The higher average RPM you keep while driving, the higher fuel consumption you'll have.
If you drive in S+ or use manual shifting a lot, 18L/100km isn't bad at all, I've had 20 or even 30+ L/100km driving hard. For an extreme example, I've heard people (Misha on Youtube) said driving M4 hard on Nurburgring and a full tank can last two laps, which is around 55L for 40km, 137.5 L/100km average.
About the EPA rating, combined was measured on the combined use on both highway and city, while on highway with 9-speed shifter it'll have around 8.5 L/100km, on city it will have around 13 L/100km, and I'm pretty sure these are tested in Comfort mode.
Haha...welcome to the world of V8 performance cars. Thankfully this car has a decent sized tank compared to others, so it gets a pretty good range on long distance journeys. With the 9-speed, the highway mpg is actually somewhat impressive for what it is. I easily get 24+ mpg on a road trip, but just tooling around and especially when driving it hard, the gallons go quickly. Funny thing is this is the most fuel efficient V8 performance car out of the three I owned over the last 13 years. I'm at about 16 mpg overall average. My previous one managed about 15 and the one before about 14, but the average on this one is mainly kept higher due to some long road trips I did. I was actually at slightly over 17 mpg after driving 6500 miles in Europe, despite driving as fast as I could on the German Autobahn. It had slowly come down driving around in the USA to 16 where it is now and the trend is lower still, unless I start doing some longer trips again. FWIW, here's my driving from yesterday running some errands and my overall stats. Smiles per gallon and not miles per gallons is what counts!
On a side note, this is why the next C63 is going 4-cyl hybrid. With the sales success of AMG under Moers and particularly the C63, these numbers don't do the fleet average any favors,
As has been mentioned, fuel mileage for an AMG with an M177 engine will vary greatly by how it's driven. If you think about it, the dynamic range of almost all aspects of the C63/S is pretty amazing!
I enter my fuel purchases into the Road Trip app and it shows that, in Imperial gallons, I've gotten as much as 31.26 mpg on a 42.65 L fill-up during an all-highway drive in a Rocky Mountain foothills area (I was traveling with another vehicle and being very gentle). I've also gotten as little as 4.63 mpg on a 49.47 L fill-up on a track day. That's better than a 5-to-1 dynamic fuel-mileage range ... thanks to computers!
Here's a screenshot of the overall mileage graph for my 2016 C63 S sedan ... can you tell how many track days I've done with this car? Can you tell how often I have to fill up on a full track day? $;-))
<snip>
I noticed in comfort mode, it changes the gear up pretty late, once it settles down, otherwise it holds on to the lower gears for quite a bit. Is that a facelift thing?
I'm curious about this, as I find that Comfort mode shifts up insanely early. My 2020 will be in 6th gear by 40mph -- it drives me crazy.
As to fuel efficiency, I share your feeling that this thing chugs gas (and ultra premium gas at that! lol). Having just finished the break-in, I'm averaging 14.7mpg, and I fully expect it to drop precipitously from there. But I knew that going in, and gas prices aren't bad right now. It mostly annoys me because I hate stopping at gas stations, and I've done it four times thus far.
I'm curious about this, as I find that Comfort mode shifts up insanely early. My 2020 will be in 6th gear by 40mph -- it drives me crazy.
Completely depends on how much throttle you give it and how dynamic you are driving. With very relaxed throttle input it upshifts very early. It will eventually learn your casual driving style, and when you give it more throttle than you usually do, then it holds the gears longer for a moment before upshifting. Initially my car was holding the gears quite long in Comfort mode when driving off. I picked my car up in Germany with a friend and as we drove out of the Daimler campus my friend immediately commented on it, and I also picked up on it immediately. However, over time it adopted a quicker upshift strategy, but now if I peel off a little more aggressive than usual, it immediately stays in the lower gear several seconds past when I would upshift already, because I've already settled in on my speed. I do find this transmission adapts amazingly well to my driving style. It almost knows telepathically if it should stay in a lower gear or not. Similar if I brake hard into a corner in Comfort mode it quickly downshifts or even if I just lift the throttle, and even skipping gears. I regularly catch it downshift from 5th directly into 3rd, so I can power out of the corner w/o it stumbling.
Last edited by superswiss; Jan 1, 2021 at 06:52 PM.
Ah, I get what you're saying (and likely what OP was saying).
It was a major adjustment for me, how telepathic this transmission is. It is so ingrained in me to despise automatic transmissions, that I was initially very annoyed at the prospect of breaking it in for 1,000 miles in automatic. But this car has really redefined the concept of automatic for me, in that it changes character in an instant. I'm so accustomed to keeping my 911 at fairly high revs, where the power is, that it threw me for a loop when my C63s wanted to be in 6th gear on a 35mph road. But mash the accelerator, and it becomes a different animal entirely.
Also keep in mind that this thing has gobs of low end torque, and actually falls flat at the top, so you generally wanna drive it lower down in the rev range. That took an adjustment for me as well, because I came from the RS5 with its high revving engine, where really nothing much happened below 4000 rpm. It's a different driving style. I occasionally miss the high revving nature of the RS5 and how it kept pulling all the way to redline, but I don't miss how it often fell flat down low as the transmission in automatic mode upshifted quickly and the power wasn't there when I needed it, especially while dual clutch transmissions are quick to shift sequentially, they take forever if they need to shift out of sequence. That's also very different with the MCT, which can instantly pick any gear it needs.
Last edited by superswiss; Jan 1, 2021 at 07:18 PM.
Coming from driving a Hellcat I figured I'd get a little better gas mileage, Nope! Average about 16 on both, the kicker with the C63 is that I always feel like I'm at the gas station, much smaller tank. I took my first road trip in it a couple weeks ago and did most of it in Comfort with a few changes to sport for a little fun with a few other cars. First time I found glide mode, LOL.
Coming from driving a Hellcat I figured I'd get a little better gas mileage, Nope! Average about 16 on both, the kicker with the C63 is that I always feel like I'm at the gas station, much smaller tank. I took my first road trip in it a couple weeks ago and did most of it in Comfort with a few changes to sport for a little fun with a few other cars. First time I found glide mode, LOL.
Wait what glide mode? This car has glide mode? I never ever experienced it.
Wait what glide mode? This car has glide mode? I never ever experienced it.
It does, but with the FL you have to be in I* with Drive in Moderate or Reduced, otherwise no glide mode. PFL has glide mode in Comfort. ECO start/stop needs to be on as well.
Yup Pre FL, I took my foot of the gas and was coasting. The display started showing glide mode, I was like wtf is this. I also discoverd cruise control only works in Comfort on that trip.
Yup Pre FL, I took my foot of the gas and was coasting. The display started showing glide mode, I was like wtf is this. I also discoverd cruise control only works in Comfort on that trip.
2017 Mercedes-Benz AMG C63 Cabriolet, 2014 Ducati Multistrada 1200 S
I don’t even bother calculating fuel economy. I knew it would be fairly thirsty when I bought it and coming from an E550 coupe it really isn’t much worse despite having almost 70hp more than my old car.
Wait until you start doing the maintenance. Tires and brakes will murder you if you can’t afford it.
While the larger front rotors on the C63 S are a little pricey, the other parts are not particularly expensive compared to other cars in a similar category. If you DIY and purchase the Brembo rotors from FCP Euro (no affiliation, just a customer), you can reduce your costs considerably (and brakes are pretty easy to do). If you track your car, replace the standard front rotors with the Brembo 2-piece rotors and they'll run much (as much as 100 deg C) cooler and your brake pads will last longer and track/race pads are required if you get aggressive (as is high-temp brake fluid).
If you have the carbon ceramic brakes ... well, those parts are outrageously expensive for any car.
As far as tires go, tires are tires, bigger costs more, better normally costs more ... driving habits cost more or less, depending upon the "style." Same for any car in a similar category.
For cars in this category, you should always get the best brakes and tires available based upon the tasks to which the car is applied.
It’s interesting that Mercedes official consumption numbers under Premium Gasoline is 21 combined city/highway MPG 18 city 27 highway but most of us here get much lower figures. I don’t mind to pay to play but Mercedes claim is clearly wrong and a bit deceiving.
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