[Blue Angel]

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There's some great info here and I can't wait to see the results of your on-going testing. My Cruze is a sedan body style as well, so your results with the box section are particularly interesting. It weighs about 1000 lbs more than your lightened Civic, so the only way it even stands a remote chance of keeping up with your car would be on the highway... around town your car must be pretty efficient!

Interesting that your 5-speed VX transmission gives you 2.4% taller OD gearing than my 6-speed Eco. Your 0.702 5th and 3.250 final give you 2.2815 vs. my 0.61 6th and 3.83 final at 2.3363. The Cruze has a very short 1st gear though, kina necessary given the small 1.4L engine and relatively high curb weight.

Funny that Honda learned the high gear ratio trick so long ago, and their current fleet of Civics has such short gearing...