This may have been posted before, but I was just curious. I included all the cars I've owned (in order of ownership and buying price only, not money put in afterward), plus my memory's recollection of the best/worst FE in each. I'm not out to prove a point, but this poll can show that a $20k+ '07 hybrid isn't necessarily a better deal than a sub-$2k 80's Hatchback, provided you can overlook creature comfort advances in the last 20 years, and for some of us, rust and fugliness. Enjoy!
1. '95 Dodge Dakota Sport 2.5L 4cyl 5-sp = $3,000 ~ 20-ish mpg but I didn't keep track back then
2. '81 Datsun 280zx GL 2.8L 6cyl 5-sp = $500 ~ hi/28mpg, low/20mpg - I still miss that car

3. '72 Datsun 240z 2.4L 6cyl 3-sp auto = $1,500 ~ teens mpg if I was lucky, she was never meant to be driven slowly
4. '85 Honda CRX Si 1.5L 4yl 5-sp = $1,400 ~ hi/47mpg, low/35mpg - she's still rollin' daily @ 226k miles
5. '89 Honda CRX HF 1.5L 4cyl 5-sp = $800 ~ ? mpg b/c she's only been driven once and during that time she tried to commit hara-kiri, stalled out twice, and in general was a deathtrap...currently being built w/ a D15Z1 engine and other mods
Mak
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'85 CRX Si Original EW3 @ 254k...suck it Detroit
'89 CRX HF-Z1 ~ When haste is needed
'97 Civic DX Hatch ~ Formerly 600hp, now 0hp, soon 115hp.