alex15

I own a '22 C300 amg-line RWD. On my daily commutes on city roads and a some highway mixed in, I get high 20s or sometimes low 30s. When mainly in the highway, I can average 36 mpg. I've only reached 40 mpg and above a few times in the highway, when the driving conditions were extremely optimal. All this is while on eco mode. Anyway, last week I took the car in for the B service and I was given a loaner. It was a '24 non-amg-line C300. I immediately noticed that on those same city-road commutes, I was getting low to mid 30s, and when in the highway I was easily able to reach above 40 mpg a couple times. This is somewhat of a significant improvement, unless the computer is just giving inaccurate numbers. The only difference I could notice between both cars was that the '24 loaner had more aggressive regenerative breaking, especially when on eco mode. Sometimes, when I let go of the accelerator, instead of the car going into the coasting or sailing mode (when the "D" gear symbol turns green) I could really feel the car breaking or slowing down, without touching the break pedal, and the "charge" bar will fill all the way or almost all the way up, then the car would let go and engage the sailing mode. My '22 doesn't have this behavior, the regenerative breaking is very minimal and the "charge" bar only ever fills up when I'm actually pressing the break pedal firmly. I am not sure if this would affect the mpg significantly, anyway. Could the newer models be more efficient, or is something to do the the amg-line? What mpg are ya'll getting on your c-class?

23C300W4

I have a '23 AMG-Line AWD. We get 25+ MPG (varies widely, mostly depending on traffic) around town and about 36 MPG on long trips.

MB2timer

My 300 sedan, I didn’t have it long enough to keep good mileage records.
My SLK320, I put over 70,000 miles on I averaged low 20s in city driving, that occasionally dropped to the high teens. Highway driving, mid 20s. All time best on 1 fill up, 31mpg.
My SL(R232), I have put about 3,000 miles on. High teens in city, low 20s highway.

Heloflyer68

I have a 2022 as well with AMG line. The numbers you are describing are at par with the one I have. Temperature and wind do have effect on the mpg of your car. The larger size (19 ove 18 inches) tires also contribute to a higher MPG between the AMG line vs the Normal one. Also the numbers you are seeing are very close or better than the EPA. Personally I switch from a V8 to a 4 and I'm amazed at how cheap this car runs.

Serg675

AMG is supposed to have less MPG due to more horse power meaning more amount of fuel pumps to the engine.

818benz

I usually get 19mpg around the city, 24mpg+ on highways, and 35+mpg on long trips.
I have a 2022 non-amg line and a 2023 amg line and both are usually the same mpgs since the engines are identical. I live in a super congested area and have a lead foot so I expected my mpg to be lower

Serg675

By AMG line do you mean trim line or actual AMG models like C 43 or C 63?

818benz

I'm referring to the trim level on non-amg engine models, since that's what MB confusing calls it. Both my 2022 and 2023 are c300s. I'd also expect the C43/63 to receive lower mpgs.

Elvisfan0108

AMG Trim level does not increase HP. It’s a different trim, not a different engine. True AMG would not be a C300.