soon to be supra owner, however, got into a debate with a friend who was talking about practicality of supercars and their ability to be daily driven etc etc.

We talked the usual names, lambo, ferrari etc etc and said that effectively you cant drive these regularly due to a combination of
a) looks inviting jealous vandalism
b)size
c) fuel consumption however, if you can afford to buy one gas mileage isnt an issue
d) clutch,most of them are heavy and clunky and not suitable for the daily "pumpin" of clutch as you sit in traffic.

Point C is what we started talking about in more detail and in particular we started mentioning the twin turbo carrera 996 against the supra and he believes that the porsche would return better mileage and out perform a supra unless obviously the supra is quite highly modded and that was his point

Is he right, what sort of gas mileage do these supras get, ya know the ones with 600-700hp that have uprated injectors and fuel rails, lines and pumps etc. do you get to the end of the block before having to fill again, genuinely interested as i love the practicality of it when its performance is measured against its rivals and i will be going down the BPU route however his point got me thinking. Can these single upgrade supras be driven on the street not talking about the late spooling turbos etc, just talking about gas mileage. What sort of mileage do owners of these vehicles get. Please help a very curious soon to be supra owner.

Its all in how much of its power you use. When I drive like most others I get gas mileage like most. It is a six cylinder after all. When you push it then yes it would suck down the gas. This is because the amount of horsepower made is directly proportinate to the amount of fuel and air used to make it. Obviously a four banger driven under the same conditions (city) would use less gas and a V8 or larger would use more because it is pumping more air and therefore gas to achive the same RPM's.
Hope this helps.

type of driving is the #1 factor in determining mpg. toyotas claim for mpg is 18 city 24 hwy for the 6spd and 19 city 24 hwy for the automatic. i have gotten as good as 26 on the hwy and as bad as 8 in the city. the beautiful thing is that because of the turbocharger these cars do not make much power below 4000rpm thus less fuel is needed. Big single turbo cars with AEM have gotten upwards of 30mpg on the hwy.

it all depends on the way u drive but the supra will get more highway mpg

But I think he means how much will you get when you get on it.

your right boostin , whats the best and worst, its difficult to tell mpg obviously but these 600 and 700hp street machines, whats their average mpg?

Well like they said earlyer it all depends on how you drive it some people on avg driving get as good as 26 mpg in city and 31 has been said by a few people on regular highway driving but when you get on it big turbos get about 10mpg and smaller turbos and bpu get about 12-17mpg

the tune is also key to determine mpg, a big single with a good tune can see 25+ on a regular basis on the hwy. on the street you will be lucky to see 18 out of a stock supra. a singled car would probably get 10-12 in city.

don't forget mileage is dirrectly corrilated to hp and how much fuel and O2 the car can consume as it takes some deep breaths.

i drove a 500hp trans am for a bit and i got 9mpg in city... never paid much attention to the high way drivin,, of course mine wase N/A so it sucked it up, and a medical condition known as lead foot didn't help. but for turbo's, they're much more efficient!!

for single turbo upgrades on twin turbos( i asume) the larger turbo would reduce the amount of torque the vehicle has availible at lower rpm. thus resulting in the engine having to work harder to accelerate the vehicle (until boost) thus resulter in opening the throtle more and consuming more fuel. and as the larger turbo feeds the motor, which also will move more air than stock turbos the car will need more fuel also resulting in more fuel consumption,

Conclusion: single turbo =more gass