I sold the '90 Firebird V6 that I had previously, and with good timing. The timing chain jumped 2 weeks later, and smashed up the valves.
Gotta give it credit, all original with 260,000 miles. Never the less, with the help here I got it from 11-15 mpg to over 20 mpg by changing habits.
And since, I've been driving the Eco-Modder Anti-christ:
1969 Chevrolet CST10, my project for 2 years and over the last year put 20k miles on! The truck sat for 10 years, stripped down before I got it.
Three-Hundred-Fifty cubic inches, 4 barrel carburettor, and the aerodynamics of a brick. I love it, a lot. But, the rising fuel prices and hopes of further building it are impossible at 7mpg. My job? Delivering pizza. While it makes the most wicked pizza truck ever, it's still pricey to run around town all week. Thus, the 4th car so far (3rd street legal), a 1987 CRX HF!
Besides the mangled front trim, it's in terrific shape cosmetically. Needs a lot of tune up work, it's running like pure hell (Will post the write-up later), but on it's 1st long drive in 18 months, with barely any power availible and jacked up aerodynamics (had to rip off the rest of that grille panel) it averaged 36 mpg on the return trip from Austin to Houston.
I didn't even know it was the HF until about 10 minutes ago, I mainly bought it for the gocart handling. It's fuel economy is a plus too.