whats my top speed?


Asked by Jul 25, 2008 at 12:37 PM about the 2003 Ford Mustang GT Premium

Question type: General

ive gotten it up to 150+ but i ran out of road and that was only just past 4,000 rpm's...any one know how fast it will go b/c i dont really feel like trying to find out again. no what i mean? lol

18 Answers


Right around that speed is it's top speed, maybe 160 tops.


163.47 mph


About 70. At least that's what it should be depending on the speed limits where you live. But... as i'm sure those sign are just suggestions i'm sure you could get about 160


All cars are programmed with govenors that usually rate to the tires. If factory tires on the lil stang are rated to 150 then thats where the cutoff is on the throttle. Find out what speed your tires are rated and thats more then likely the top speed of the car unless you got it tuned.

a 2007 gt only does 150 but id say a 2003 does probably 170


You got this information from where?

1 of 1 people found this helpful.

i mean ive done 140 in my 07 GT and it was about at 4500 on the tach and it redlines at 6. I looked it up on like car and driver and they say an 07 GT does 149 tops. If Spencer said he was doing like 150 and the tach was at 4500 im sure he could get about 10-20 more mph. Ive been in a 2004 cobra doing 175. But in all seriousness its stupid to do these kinda speeds on regular radial tires. I regret doing 140 because it has shitty tires and probably coulda blown.


yea i have tires rated at 200 mph, but even then its pretty stupid to do and im pretty sure im not gunna do it again, but man if u get a blow-out at those speeds they would be scraping u up off the pavement with a shovel...


I've had mine on the dyno and it did 135mph on a 4th gear pull, 160 is a good estimate.


the top speed might be 160 then the cars computer will shut the fuel off


well i have an 06 v6 and she does around 195 and i run outta road

got a 05 gt tuned and the usual bolt ons(eliminated governor) and i can peg the speedo and then another 28mph according to my gps and thats all shes got, so 178mph. takes awhile to get there though.

you didnt do 195 in your piece v6 4.slow


if your computer is going to shut your fuel off it would do it at 112mph or 120mph mustangs are listed as 'governed vehicles' but really there not...


funny how the multiplier 1.6 makes it sound like ur a z06 eh... thats 121.875 mph...


178mph out of a 05GT man thats blazin fast... im skeptical man what 'bolt ons' are you talking about here... i gotta figure youd need 600+whp to hit that in the aero wall of a new stang...


kp/h mayb... but im with yah...

It's speed what kills.

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