My lowest cost per mile auto that i have ever owner was my 94 Buick Roadmaster. I paid $5800 in 2000 for it, and put 95,000 miles on it. 6.1 cents per mile, Average mpg over this time has been 23, at 90% + highway. 4130 gallons of fuel or 11 cents per mile. Repairs over this time, 2 rear shocks @ 45, 2 sets of front brakes @12 and 17, (still on original rears), 1 set of tires @ $436(Michelin X radials installed at 85,000 miles still have tread), 1 tune up $425(expensive cap, rotor, wires, plugs @ 110,000), Water pump at tune up preventative @ $80 and 1 radiator @ $135. $1150 spent on maintanance items, doing all work myself. 1.2 cents per mile.

total cost assuming zero residual value = 18.3 cents per mile. No wonder so many taxi cabs were Chevy Caprice.

This car is now used only in the winter, so that my 87 300D can be parked over the salt season. But, I expect it to be on the road another ten years, or 80,000 miles. What will the cents per mile be at the end?

Regardless of what anyone's personal views are on Detroit iron, Ford and GM always could make a good RWD sedan. Caprice, Roadmaster, Crown Vic, Grand Marquis were incredibly well built to rack on mile after mile at low cost.
Fuel economy with a V8 in the mid 20s. I have got as good as 27 MPG with the Roadmaster. Never got less than 20 mpg with any fillup.

__________________
1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes