Quote:
Originally Posted by Jeffblue
is250=2.5 liter engine, 370z=3.70 liter engine. my altima coupe has a 2.5 liter engine, gets about 25 mpg on average as well. bigger engine, less MPG, all things being equal.
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true to that, but I would think there's a reason why they have a rating for a baseline comparison because fuel efficiency can vary by a lot even with the same/similar size engine capacity. I doubt Lexus IS350 is way off from their rating. It'll still be in the avg of the 2 CTY & HWY rating.
Then there's a debate about it being a sports car and the other one isn't. But both outputs similar HP. I'm just more interested in how well, if at best I'd ever be able to even get the MPG of over 20 for my car as it is rated at 26MPG for max on HWY only. I'm not being naive because I know those ratings aren't ever reachable because those tests are setup differently than our daily driving. But 15.9 MPG? 17.4 MPG? that's just not even close...