None of the variations of the 400, 420, or 430 provide good gas mileage!
None of any Mercedes V8 engines provide good mileage. What they do provide
is smooth, powerful acceleration and cruising. They all run on premium fuel.
What's hard to figure out is how Cadillac created a Northstar V8 that runs
on regular gas and produces over 300 hp! P.
The choise is to throw up an '87 300D for a '93 400E. Considering the
average I get on the diesel is 27 on the highway, and I'm starting to wish
for more power... 24mpg freeway sounds AOK, especially when coupled with an
Anyone else got some figures?
Fueleconomy.gov is the best place to get your fuel mileage answer. These are
the base EPA rating that is pretty on the mark for fuel mileage.
1987 300D is rated at 25 City and 30 Highway... which is an average of 27
The 1993 400E is rated at 18 City/ 24 Highway... which is an average of 21
MPG. Requires Premium gas.
The fuel cost differece between the two based on annual usage and average
price which may not be indicative of current gas prices... $977 for diesel
and $1680 for gas... $703 difference... based on 15000 miles per year usage.
That's a nickel extra per mile... on top of your vehicle's cost, insurance,
Or, intercool the OM603. If someone would work with Mosselman to get their
kit working on US engines (with EGR/AVR) then we'd be looking at 175hp and
250ft/lbs, comes out to more power than a 99 on a lighter body.
Estimate is under $2,000 per unit, I think. If someone would do the ground
work, we'd be in business. I wonder who could do that...
Actually they just make an intercooler for 603 turbos, as well as some other
merc diesels. Their claim to fame is the one for the 2.5T engine which
brings power up to higher than a stock 603 turbo while getting more mileage.
The intercooler for the 603 would make it the 2nd fastest diesel car you can
buy in the USA, second only to the 05 CDI.
Only catch is the piping is for euro spec engines, without EGR and AVR. So
they have to redesign the whole thing to get it to work on US engines, or we
have to buy a full euro intake/exhaust (dollah dollah). Mosselman is
apparently willing to work with the US engine if someone gives them the
parts to play with...
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