Mods for mileage??
Efficiency is obviously the name of the game here.. So, do things such as headers, better IC pumps combined with a tune help in these regards?
More power is fine.. but that's not my purpose here.. oddly.. lol
Joking aside, I don’t think so. Most people are going to ask why you’re doing this. I’m a bit curious as well, you can get low 20’s on the highway which honestly doesn’t seem to bad for around 500 hp cars. Compare that to an E60 M5 lol. I guess the new cars are a bit more efficient with cylinder deactivation and all that but still.
2. Higher PSI tire pressure
3. Repeat #1
I can consistently get 22mpg on cruise control at 70mph in my E63. I think that's pretty reasonable for this kind of car!
Joking aside, I don’t think so. Most people are going to ask why you’re doing this. I’m a bit curious as well, you can get low 20’s on the highway which honestly doesn’t seem to bad for around 500 hp cars. Compare that to an E60 M5 lol. I guess the new cars are a bit more efficient with cylinder deactivation and all that but still.
If I could sneak into the mid 20's I'd be stoked.
I have a very warped view of power, I frankly don't think these cars make all that much power. I mean.. it's plenty for the street.. but if woefully weak for any racing I'm used to or around these days. So really.. the purpose for the ask is, I'm curious what people have done performance wise that has inadvertently resulted in better mileage when not trying to hot rod around.
None of the stuff you mentioned in the original post is even readily available for your car. Sell it and buy something more efficient if mileage is that much of a concern to you.
If I could sneak into the mid 20's I'd be stoked.
I have a very warped view of power, I frankly don't think these cars make all that much power. I mean.. it's plenty for the street.. but if woefully weak for any racing I'm used to or around these days. So really.. the purpose for the ask is, I'm curious what people have done performance wise that has inadvertently resulted in better mileage when not trying to hot rod around.
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None of the stuff you mentioned in the original post is even readily available for your car. Sell it and buy something more efficient if mileage is that much of a concern to you.
Apparently reading between the lines isn't your strong suit.. N_Rob joked that I should SELL the AMG and buy a E320.. Well.. I happen to have BOTH..I posted in this section because it pertains to the car I was looking for info about.
Understand what you're reading, get a feel for context, and lighten up a bit why don'tcha? If you've got nothing to add move along.
I guess If I was too overly concerned I'd buy a diesel one, those seem to get pretty insane mileage. But this is kind an odd "green rodding" game for me.




But you can squeeze a few more miles to the gallon out of them, and it starts with your right foot. I've gotten 22.3 mpg on the highway from my E63. So it can be done.
But you can squeeze a few more miles to the gallon out of them, and it starts with your right foot. I've gotten 22.3 mpg on the highway from my E63. So it can be done.
There's alway ways to improve efficiencies. I will be on 95 with it a lot.. and if I'm cruising in the HOV lanes I'd like to get the best MPG I might be able to..




There's alway ways to improve efficiencies. I will be on 95 with it a lot.. and if I'm cruising in the HOV lanes I'd like to get the best MPG I might be able to..
Use cruise control, whenever possible. Coast whenever possible, apply gas pedal smoothly, not abruptly. That is how I got 22.3 mpg from my E63. So it can be done.
without having things like displacement on demand, Atkinson cycle, less weight, or smaller displacement engine you're out of luck on this front. drive like a grandma...accelerate real slow always and coast lots.
and stay under 65mph on the hwy

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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Initial thoughts from the out set of just doing some cooling things. upgrade the IC and IC pump, and then tune around that. Then think about others.. Seems from a power perspective, with out going crazy the 83mm blower pulley is good and then as you mentioned a decent set of headers.
The larger injectors, colder plugs, and tune *slightly* decreased my overall MPG but if I am light on the throttle I can still get close to 20mpg highway. If I were to do things over and only concerned with mileage I would have not added that 83mm pulley so I could stay on the stock injectors and plugs.
The other thing I've yet to try is reducing the weight of the vehicle. In town I could probably get away with ditching the spare tire and if I have another couple grand laying around going to a much lighter set of wheels and keeping the stock wheel size but with a slightly different compound that rolls better.




*i took this from the trip computer...is that generally accurate? i haven't tracked mileage manually




If you want fun and good MPG, W210 E55 is a good choice. Lighter than W211 with 349Hp average freeway i got 27 mpg.
Having said all that, first thing you should do is to clean those headlights so it looks like an E55 and don't be surprised if they were slightly cracked on the inside for we have rarely seen any E55 (regardless of mileage) with hose foggy headlights?
Last edited by C2 Turbo; Aug 8, 2019 at 02:52 PM.
Having said all that, first thing you should do is to clean those headlights so it looks like an E55 and don't be surprised if they were slightly cracked on the inside for we have rarely seen any E55 (regardless of mileage) with hose foggy headlights?





