Thanks for the welcome, everyone!
Tele, your avater looks familiar -
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Originally Posted by 2000neon
Those are great numbers, especially for so few modifications...
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I honestly cannot tell whether anything I've done has added a noticeable improvement to my mileage... between the car getting more and more "broken-in" and me constantly working on my "Eco" driving skills, I think the real world efficiency is getting better. This assumption is made by the mileage staying consistent despite plummeting winter temps. Mods along the way have not made a noticeable jump in mileage, but they are generally headed in the right direction. I hope. I'm waiting to see what the summer temps bring now that the car and driver both have a little more experience.
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Originally Posted by MetroMPG
Very cool - so you have two "performance cars". Nice.
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That's exactly how I see it, both very high performance cars in completely different competitions.
Funny, the Z06 is actually quite efficient considering what it is (a +400 hp "supercar" back in its day). Aerodynamics, light weight and tall gearing allow it to cruise at around 30 MPG (US) on highway trips (EPA rates it as 28 MPG Hwy using the old pre-'08 methods). My girlfriend's '11 BMW 3-Series has an engine less than half the size and with less than half the power (2.5L 200 hp) and can barely beat that figure.
It has so much torque that it could easily use MUCH taller gearing for a significant mileage increase, but that's not really the car's purpose... it is much happier in 3rd gear wasting hypermilers!
The Cruze seems very well suited to the type of driving I'm currently doing; mostly easy commuting without too much stop-and-go. I have a very easy commute that generally follows the Ottawa river at medium speeds, averaging around 50km/h, including a long stretch with the cruise control set to around 70-75km/h (~45 MPH). The benefits of a hybrid powertrain would be few in this situation, so the good 'ol gas only Cruze seemed like a good choice.