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Discussion Starter #1
I have a 6 cylinders, 300SEL. My dad used to coplain the car takes to much gas, 18, 19 miles per galon. Now the car is mine and it takes between 14 to 15 miles per galon. This is killing me.
Anyone have a good idea of what to do to get better gas mileage or sell it and get a japanese car?

Recent done: head gasket set, tranny rebuilt, spark plugs, ECG valve, air filter, smog, monovalve, new tires, etc etc....
 

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Either get a diesel version, or sell it for a Japanese econo-car. Don't expect good milage from a 5000 pound car.
 

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97 Ford Scorpio Cosworth
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Snibble - 2/25/2005 6:32 AM

Either get a diesel version, or sell it for a Japanese econo-car. Don't expect good milage from a 5000 pound car.
why do you people keep saying its a 5000 pound car?
i mean come on we all know its not 2500kg, actually a 300 SE is about 1630kg and a 560 SEL is maximum 1800kg, 1000kg is 2000 pounds...
 

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DEF-C - 2/25/2005 7:24 AM

Snibble - 2/25/2005 6:32 AM

Either get a diesel version, or sell it for a Japanese econo-car. Don't expect good milage from a 5000 pound car.
why do you people keep saying its a 5000 pound car?
i mean come on we all know its not 2500kg, actually a 300 SE is about 1630kg and a 560 SEL is maximum 1800kg, 1000kg is 2000 pounds...
True, the 300 weighs a little less..
However, the 560 weighs 5070 pounds/ 2500 KG.. this coming from the tag in the door jam.

edit: catalog says the following:

300 se:
kerb weight 1570 kg
perm. gross vehicle weight 2090 kg
(the above is for the standard weight with no options that would increase the weight)

560sel:
kerb weight 1830 kg
perm gross vehicle weight 2290 kg
again.. just standard with no additional options.

The above are numbers dealing with Euro-spec cars. Source is the dealer booklet available when car was new.
 

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Snibble - 2/25/2005 7:28 AM

DEF-C - 2/25/2005 7:24 AM

Snibble - 2/25/2005 6:32 AM

Either get a diesel version, or sell it for a Japanese econo-car. Don't expect good milage from a 5000 pound car.
why do you people keep saying its a 5000 pound car?
i mean come on we all know its not 2500kg, actually a 300 SE is about 1630kg and a 560 SEL is maximum 1800kg, 1000kg is 2000 pounds...
True, the 300 weighs a little less..
However, the 560 weighs 5070 pounds/ 2500 KG.. this coming from the tag in the door jam.

edit: catalog says the following:

300 se:
kerb weight 1570 kg
perm. gross vehicle weight 2090 kg
(the above is for the standard weight with no options that would increase the weight)

560sel:
kerb weight 1830 kg
perm gross vehicle weight 2290 kg
again.. just standard with no additional options.

The above are numbers dealing with Euro-spec cars. Source is the dealer booklet available when car was new.
true, the fully loaded weight is maybe 5000 pound for the 560 sel.

in my carpaper, hes dotted with 1630 kg but i doubt that...
 

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1985 300sd
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The tag on the door is the maximum loaded weight, not the actual weight. Come now, 5000 pounds!! A 560sel actually weighs 4100 pounds, come on now guys, I expect more from you all. Here, have a look if you don't believe me
http://www.edmunds.com/used/1991/mercedesbenz/560class/14521/specs.html?tid=edmunds.u.prices.leftsidenav..6.Mercedes-Benz*
 

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I never could understand all the posts about gas mileage. I mean, who cares. If an extra $1000 per year in gas is so worrisome, get a Vespa or try public transportation. The only annoyance with poor gas mileafge to me, is the constant trips to fill up. My comfort and happiness doesn't come with a price tag. Make more money.
 

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1991 300 SE
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It just feels like 5000 pounds…[;)]

The extra fuel is a small price to pay for outstanding crash protection.
 

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SLK55 (2006) C36 (1995)
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My car is 4300 lbs with me in it. had it weighed during smog check. subs weigh a LOT!
 

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cyberdrakon - 2/26/2005 3:10 AM

My car is 4300 lbs with me in it. had it weighed during smog check. subs weigh a LOT!

true, also do rims wheigh a lot, my 18" x 9,5" brabus do 26.8 pound per wheel...
 

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380sel 1983
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Couldn't agree more with mrtikket, jdc and Eddie(Cyberdrakon). Mate, you don't buy a W126 if fuel economy is high on your agenda. ANd yes, they tend to feel like they weigh that much. But with a bit of experimentation and imagination I have found that handling can be improved dramatically.

With respect to crash protection, i watched a recent showing of a car program Fifth Gear (its a UK show, not sure if its in the US). On the show they recreated a pile up during foggy conditions on one of their interstates. Approx 70 cars were involved. They used 20 or so in their demonstration. After piling up numerous 4 an 6 bangers (cylinder cars) at around 70 mph they introduced a W126 at 70 mph. The vision was spectacular. The 4 bangers examined had there engines on the front seats and the rear wheels about six to ten inches from the front wheels. The W126 sustained no visible cabin damage at all. Yeah the front was a crumpled mess, BUT the front doors would still open (with a little difficulty) and none of the windows broke. If you've not seen that episode it is worth a look.

I take pride in showing that vision to a number of people who with 'authority' tell me that my 'old' car is not as safe as their newer 4 cyl cars with all the crumple zones.

I believe with a bit of searching the vision is downloadable. I got some off of p2p via morpheus [:)] Cheers Tarquin (Brad)
 

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My 420SEL gets around 18mpg in town. Just got 21mpg on a highway trip, running 80mph the whole way. So I guess to get better gas mileage, SPEED UP!! [:D]
 

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81' 300SD, 82' 300D
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Get a W123 (77-85 E-class,U.S. models... 230, 280E, 280CE, 240D, 300D (turbo & non-turbo), 300CD (turbo & non-turbo), 300TD (TD stands for Touring Diesel here (station wagon), not Turbo Diesel.), safe and reliable as a W126, and you'll get the mpg you're looking for, especially in a 240D, that is if you don't mind not being able to go 100+mph.[:0]
-Joe
 

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Discussion Starter #14
So sad that I asked one thing, and it lead to another story. Ridiculous huh.

deathrattle,
26mpg? Mine is 14 to 15 mpg. Thanks for your input

DEF-C,
I think mine 300SEL weight more than 4klbs (on door jam labe). This is full load, with 4 or more people and etc.. Not just the car itself
Again, I think JR_Rider is correct

MRTIKKET,
I know all the goodies blah blah about you said. I understand if I want to keep my ride I have to scarify something BUT I still want my car can get a little better. What wrong with that? If my car has something wrong that I don’t know off. Or if I can make some twist to something on my car to make it better, why not? What wrong with asking?
AND don’t you think 14 mile per gallon is a little too much for a sedan? I do.
One thing though. Most people who making TOO MUCH money that I know don’t drive OLD car as W126. Are you making too much money? You talk like you do.

Thanks for all you guys who gave me suggestions
 

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RNMB , Hey if you can get your car to give you better gas mileage, good luck! Everyone knows hese cars were not built with gas mileage in mind.
 

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MRTIKKET - 2/27/2005 6:48 AM

RNMB , Hey if you can get your car to give you better gas mileage, good luck! Everyone knows hese cars were not built with gas mileage in mind.
actually they were[:eek:)]

thats the reason why they shaped them that way, and they did loose the big bumpers etc....

you seem to know alot about the w126s huh ?!
 

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The 126 was not built with gas mileage in mind. Furthest thing from MB designer's mind. I wish the U.S. spec cars got the small bumpers instead of the guardrails we ended up with.
 

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1991 300 SE
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As we all know the 126 went through extensive design and testing procedures to improve gas mileage from horrible to not so horrible, and in that context Mr. T has a point. The body spend a lot of time in the wind tunnel and the use of alloy and plastic in the V8 engines were all efforts to reduce fuel consumption. But Newtonian physics will win out: an object at rest will remain at rest – the amount of energy required to overcome the inertia of a standing 4000 pound car (give or take) is considerable.
 

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I just did some reading, and when the W126 came out, the old V-8s from the W116 were replaced. You could argue and say that they were upgraded, the 3.5L replaced the 3.8L, the 4.5L replaced the 5.0L, but MB says the engine sizes were decreased, that the 6.9L was replaced by the 5.0L, and the 4.5L was replaced by the 3.8L. This was all done as a result of a "Energy Program" by MB because of the fuel crisis. Any way you look at it, if you drive a gasser W126, you're dealing with a gas guzzler, and if you don't like that, get a diesel W126 or W123.
-Joe
 
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