Here is the compairson on my dad's 300SDL and my 300SD

300SDL 24-29 MPG
300SD 19-23 MPG

Why such good in a 300SDL is because the aluminum heads, Lighter thus making it easier to turn and reduceds the waste of energy, Advance Fuel injection system, Serpintal Or 1 belt driven system reduces the waste of energy and self adjusting valves increced in fuel milage...

__________________
Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

I crowd my 87 SDL (188Kmi) all the time and I get a consistent 24/25 miles per gallon. However, I have slowed down a bit since fuel prices are so high now. I should get better mileage since my driving is mostly at hiway speeds.

__________________
N. Hodges
1994 S350
1987 300 SDL (for sale)

I get a consistent 22-23 mpg in 95% city driving, although I've started to become much more conservative on my driving (accelerating and braking), so we'll see how she does now.

__________________
91 350SD
14 F150 Eco
19 Fusion Hybrid
11 GT500

I think that as we drive more gently to conserve fuel, we'll see more EGR problems from those that are still functional and gunking up the intakes.

__________________

Gone to the dark side

- Jeff

I'd love to get that kind of mileage in a big sedan like an SDL, but find it hard to believe. My 300TD gets about 26-28MPG.

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

Braking is for emergencies and for those that don't know how to drive..........

The W126 has a more efficient body and a more efficient engine (I-6), so the additional weight (about 400 lb.) is basically offset.

So, wouldn't that mean one could reasonably expect about the same mileage from both cars?

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

I think you'll find the usually I-6 does better than the I-5 on the highway and the city is largely a wash. But, my I-5 precisely matches the I-6 for fuel economy..........however, it has a 2.88 rear and a rebuilt head and perfect IP timing.

I rarely use them since changing my driving habits.

__________________
91 350SD
14 F150 Eco
19 Fusion Hybrid
11 GT500

My 300 SDL gets about 18-22 in the city(averaging about 19 city driving it with a lead foot), and on the highway, 28-30 mpg at max speeds of 75 mph. Driving with a lead foot, I get about 25 mpg combined. Driving with economy in mind, I get about 28 mpg combined.

I have had a few 40+ mpg trips with it, but these were 200 mile trips taken at a steady 50 mph in the slow lane, making sure to shut the engine off at stop lights, coasting to stops in neutral, coasting down hill in neutral, ect. These trips are definately the exception and not the norm!

I've also taken note that she gets about 10 mpg going 115 mph.

Out of interest and just for information if its anyuse to anyone....!

My W123 wagon, N/A 617.952 running on my daily commute of 100 miles round-trip, approx 60 miles of which is motorway usually at 75-80 alledgedly! gives me approx 27 MPG...

--But Thats Imp. Gallon....

Ive got a few things to do and to try, maybe I can get a few more MPG outta it!
--Maybe if I slowed down a bit might help!

__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

I'm on board with the others A mix of highway and town (not city) I get 26-32MPG and I don't pussy foot it it likes the R's. However I haven't got to do a mileage test since I put new monarch injector nozzels in and balenced them within 25psi of each other flushed tank and put in new tank screen in I bet it will help the MPG once I figure out my idle issue.

I'm considering the prospect of building aerodynamic body panels for mine, not just for the fuel economy benefits, but also top speed and acceleration while passing on the highway. I'd love nothing more than to eventually have a Myna performance kit in this thing, and some streamlining to have 40+ mpg hwy being routine, 0-60 mph < 6 seconds, and with a gearing/wheel change, the prospect of 150+ mph top speed... but that's about $5,000 and hundreds of hours of work later.

I have Goodyear Assurance Fuel Max tires on it, and they have given me a measured 1 mpg extra.

I get around 27 but I drive alot of highway miles and I'm not light on the pedal. I don't know if these cars can get over 30 mpg. The thing is anyone will tell you anything to sell a car. DID YOU KNOW THIS CARS CAN GO A MILLION MILES. I love that one the best.

__________________
Professional greasecar installer
Austin TX


98 Jetta TDI with grease car kit + veg-therm (totaled)
87 MB 300SDL running on B99 / greasecar kit + 30 fphe
www.austingreaseguys.com