Tested: speed vs. MPG, 2008 Corvette Z06 (505 hp)
http://ecomodder.com/imgs/2008-corvette-z06.jpg
One of the guys I sail against regularly in our local sailing races (24 foot Shark fleet) has a 2008 Corvette Z06 with the 6-speed manual transmission. After last night's race (we won! :)), I brought up the subject of fuel economy, and he gave me his version of the occasionally heard story that Corvettes get surprisingly good fuel economy - given their power - when driven reasonably. We know that the car's "secret" is its massive torque paired with very tall gearing and relatively good aerodynamics (Cd of 0.28, CdA of 6.27 for a '92 Vette - source), which allow it to loaf down the blacktop in top gear even at fairly low speeds. Sometimes they even win mileage competitions: http://ecomodder.com/forum/showthrea...thon-5508.html Just for kicks, we're going to go out and get data to do a "speed vs. MPG" graph in the next few days. Watch this thread! [EDIT, Sept 11: added EPA ratings...] For reference, the car's EPA fuel economy ratings are: 15 mpg (US) city / 24 mpg (US) highway / 18 mpg (US) combined Source: Model 1 Vehicle Characteristics [EDIT, August 28: added graph below, plus methodology ...] http://ecomodder.com/imgs/graph-speed-mpg-corvette.gif Weather conditions: August 27, 2009 Sunny, 18C Wind E 7 km/h Pressure 102.2 kpa Humidity 48% Raw numbers: Speed km/h ... E (mpg US) ... W (mpg US) ... Avg mpgMethodology: Air conditioning was off, windows were up, and fresh air was on fan setting 2.Route: 2 lane highway, straight, dry & level (follows river edge). The road runs SSW/NNE and can be found here: 1000 Islands Parkway - Google MapsTraffic conditions: There was rarely traffic ahead in my lane, and no closer than 5 seconds when present. Some traffic was present in the oncoming lane.--- See also: |
So... that car has roughly 10x the horsepower of the Flea and 20x more than the ForkenSwift ... This should be interesting.
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True! I'm just going to guess, but I think despite having ~10x the Flea's peak power, it may post numbers that are in the range of 50% of the Flea's original speed vs. mpg graph, at least at lower speeds.
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Does this engine have cylinder deactivation?
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Looks like Pulse & Glide will work great at just about all "normal" speeds...
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Good question - I'm not sure. I'll find out of course.
--- NiHaoMike - we'll see about Pulse & Glide... |
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Note the overall economy is only 30mpg (imp) averaging 30.96 mpg over the trip's two-day, 411-mile route. That mark represents an improvement of 61.26-percent over the Z06's official European combined mileage figures and is a new record for the MPG Marathon |
Point taken, dieselman. Scoring method is a regular bone of contention in mileage competitions.
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I have a 93 Trans Am with 6-speed that also gets very good highway mileage (high 20's). It's not how much power you have, it's how much you USE!!!
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