90lxracer

Curious if there's been any effort in putting stuff to the cars that have a noticeable gain in fuel mileage. Of course this is in situations where you're not beating on the car.

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

N_Rob

Yep, the best one is selling the AMG and buying an E320.

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.

drothgeb

Nah, you are stuck in low 20s high way and much worse city. The car has a compression ratio under 8:1, great for boost, not great for MPGs.

cfmistry

1. A gentle foot
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!

90lxracer

I actually have a W210 E320 lol

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.

Strigoi

Why are you asking this question in the W211 AMG section? Post in the correct section for your car and maybe you'll get some relevant answers.

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.

N_Rob

Yeah I don’t think you’ll be able to make it to mid twenties. Maybe if you were to hyper mile a long trip but you’ll never see that with any kind of city driving lmfao. Take your 210 when you need to do traffic I guess

Strigoi

He doesn't own a W211.

90lxracer

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.

90lxracer

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.

Yuille36

Are you kidding me, these are AMG's fuel mileage wasn't a high priority back then, as much as it is now. The W211 E55 and E63 weren't known for great fuel mileage.
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.

90lxracer

Again.. I'm not beating on the car.. I don't need to, frankly they're not all that quick. Fun? Sure! Just not something that blows me away as far as acceleration.

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..

Yuille36

Understood....... Start out with proper tire inflation pressures. Add injector cleaner or have a induction service done to clean out the gunk that might be limiting your fuel mileage.
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.

hachiroku

the easiest thing you could do is go with skinnier tires. the more you can reduce rolling resistance the more efficient you'll be. beyond that, just ensuring your engine is running in tip top shape will be all you can do.

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

Exotic-metal55

There are a lot of things you can do, just depends on how extreme you want to go. No one mentioned tune to my surprise but lot can be done there to help MPG.. Headers can hurt or help depending on design. You need flow but also low rpm scavenging. Better quality spark plugs and wires helps. Getting your heads ports cleaned up and quality valves helps, as oem valves are poor quality and many of them do not seat well (bad oem valve jobs and castings).. Differential gearing for hwy. Getting adjustable suspension parts to better align tires. Lowering your car helps a lot but again you need alignment. If you need large back tires, maybe go narrower on the front. Sure these are AMG cars are made to scream but you can have both if you desire to do it. Passion is passion, so if mpg is it, then its all about having fun with your ride.

90lxracer

That one thing I was thinking as well.. Factory tunes are by default and design "muted" because they have to be. There's a bumper to bumper warranty to think about. If a tuner is worth their salt.. they can manage the part throttle and lean that towards the MPG side of things.. and once things go over say 65-70% of the TPS value it's game on..

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.

lost27

@90lxracer I had some of the same thoughts when building my CLS 55 up with regards to getting better mileage. Unfortunately, I only made things slightly worse. I went with the upgraded heat exchanger, bosch pump, American Racing Headers, 83mm pulley and a tune. If I had skipped the 83mm pulley, I probably could have improved mileage with just the headers and tune. The problem with adding the 83mm pulley is now with the extra power I was close to maxing out my injectors so I ended up upgrading those to 550cc injectors and one step colder plugs to increase my margin of safety for the engine.

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.

drothgeb

Haha, good luck getting better mileage out of your tune and headers and what ever other pipe dream UPD is going to try to sell you. You will be grasping at straws brotha. Don't waste your money with that goal in mind.

StarvingArtist

If I drove without cruise control, my first CLS55 would get 24.9 highway. There's an old thread about gas mileage around here somewhere, I think it was Denrol (not sure I spelled that right) got 27 with headers and other mods with his E55. My current CLS has P030 brakes and the programming keeps them warm. Kills mileage. Not sure how to fix that. Maybe buy another CLS and put these brakes on it without touching the computer. They really are that much better. I wouldn't want to go back to stock.

lost27

I'll have to go find that thread, the mileage reported on the trip computer actually did go up after all my mods but once you go to larger injectors that trip computer mileage can be off by 6-13% from what I've been hand calculating for mileage after upgrading injectors.

90lxracer

This is what i'm talking about!! I don tmind doing stuff like that. I don't mind throwing headers at it, and a also making the cooling work a bit better, then tune it to take advantage of said mods.

kiluminati616

here's what worked for me - i took my car drag racing and temporarily lost the urge to 'feel the power'. on the 300 mile road trip i made the day after racing i drove the car like a prius and managed 22mpg - easily 2mpg better than i had ever gotten before. i don't see my car ever getting any better than that.

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

CharlyE500

If you looking for better MPG then try get header and tune. I think my car got better mpg. I once drove from LA to Fremont got 23.(average speed 70)
If you want fun and good MPG, W210 E55 is a good choice. Lighter than W211 with 349Hp average freeway i got 27 mpg.

C2 Turbo

Had you looked for slightly modified car, you would have saved yourself a lot of headache/time and of-course money. Thought you were looking for a stock car, didn;t realize you wanted to modify it yourself. Modifications however, brings another box of Pendora to the equation, if you know what I mean
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?

90lxracer

I appreciate your highly constructive input. I'll get right on that just for you.