bkrantz

Not to start another mpg thread, but I was happily surprised the other day when my 2017 C2 with 19 inch wheels (and tire pressures just above the comfort settings) got almost 33 mpg. I went 407 miles and pumped in 12.4 gallons (and made sure the tank was full). This included mostly two-lane, cruising at 70-75 mph, a short stretch of interstate at 85 mph, and some fun twisty stuff. No significant or consistent tail winds that I recall. I had two people and some luggage aboard.

PJ Cayenne

I did a 120 mile run last week with the wife to the outlets. Really a solid mix of bumper to bumper, steady highway speeds and a few sprints until the organic speed detection device sounded off. Computer indicated 25 mpg, so nowhere near your number. I can never stay in 7th gear for too long. By the way, between the frunk and the rear seats, she took home a nice haul.

FI Flyer

What settings? Auto off/coast? Sport?

Hurricane

arter

I can get 30 mph with my 20's with long steady state highway runs at 75-80. Have to be in 7th gear for this.
With my 19's , I can hit 31-32 ( but they are 4% smaller in circumference


Tracks days it says 9 mpg ( which is the min reading). Really running around 5 mpg from the amount it takes to tank up.

Valvefloat991

I recently drove from Denver, CO to Paulden, AZ and back with 2017 C2 M7, spending most of my time in 7th gear. I also have the 19-inch wheels and set the tire pressures at the NORMAL settings.

Cruising speed was typically10 percent over the limit, though on I-80 in Utah, I found a rabbit running about 95 and followed a quarter-mile back for a while. On two-lane roads, I ran 10-15 over the limit and did plenty of passing, often pulling back into my lane at triple digits (usually only a fifth-gear downshift needed).

I averaged just over 32 mpg on each leg, which is pretty satisfactory, given the speed.

In such driving, I would expect to get better mileage than a PDK, given the weight and parasitic loss advantages of the manual. And, of course, the base C2 has slightly taller gearing than the S and GTS, which doesn't hurt either.

subwoofer

bkrantz

No auto-stop (not that it would have made much difference, since I encountered only 3 or 4 red lights in 400 miles. I put the trans in 7th about 50% of the time. Normal mode the whole way.

goldduster

Bought it in Pasadena and drove it home to San Jose. ran up Rte 5 and was amazed to make it on the original tank of gas. Got 31 mpg and had a lead foot all the way.

Jaws1

I just did a 600 km run and averaged 7.4 L/100 km, which is 31.79 mpg. .2 C2 mt with 19" wheels too.

.2PDK

I'm assuming you mean "30 mpg" here.

Either that or you're driving a .1

whiteducktail

In my meager excuse for a 911 (a base .1 ), I can get mid 31's on the highway, when in full "eco" mode. I'm usually driving around 80 mph +/- 5 mph.

AlexLou

IrocMan