Well, I've put some mods on my Old 82 Vw Rabbit Diesel.. They were all relatively inexpensive.. The original owner I bought it from turned up the injection pump.. Not bad.. It still yielded me around 42 - 43mpg.. - Then I put on those Flush No-Holes Racing Hub-Caps.. That made it even better.. I removed the Rear Bumper.. Its a big Wind Catch.. I then put on my homemade RAM Air intake.. I draw cold air near the ground and suck it up into the intake.. This modification allowed me to have more power gain a higher top speed and even allowed me to get better gas mileage.

When I first got the car I averaged 55mph.. It was a chore going up a hill, and I typically slowed down going up. Now with the mods, I average 70mph, I can climb the hill and increase speed as I do it.. And I get better mpgs.. Which I've been averaging 48mpg.. While hitting a blistering 70 to 75mph.. ;)

All in all I'm sure if I slowed myself down did 55mph again, I'd easily break the 50mpg mark..

Not bad for a car that was made in the 70's and early 80's.

.