how do manufactures get 0-60 times

[adam2007]

How does a typical car company get the 0-60 mph figures for a car.

do they do 0-60 on a rolling road, so they get faster as no wind resistance, or do they drive it for real? if so is it running on fumes with nothing in car except spare wheel??

[ISLAMATRON]

actually most manufacturer 0-60 times are very conservative, they dont do very hard launches

quite the opposite for the EPA fuel rating where they go all out and fold in the mirrors, pump up the air pressures, run on low oil(zero viscosity if they can), turn off the A/C and a bunch over other crazy stuff

I dont remember any specific standards, such as SAE for 0-60 tests

[nae]

sometimes they pretty much make it up
sometimes they design the cars to do 100 kph
just in the top of 2nd to avoid that extra gear
change

magazine are more likely to give a real word figure

but at islamatron says there are no standards and they
dont do race starts.

and unlike a drag strip they wont include reaction time

[Michiba]

some are actually just calculated estimates aren't they? based on power/torque, weight, gearing etc.

[Scotracer]

some are actually just calculated estimates aren't they? based on power/torque, weight, gearing etc.

Yes a lot of them nowadays are theoretical simulation results. Honda are notoriously conservative for instance - my car is manufacturer time of 6.4 seconds but many magazines have had 5.5 out of it.

[modbaraban]

and unlike a drag strip they wont include reaction time

Reaction to what? It's not like they race between the lights. It would be sensible to start the timing when the car starts. I'm sure there are telemetry systems that can do it.

[tadzio89]

nowadays they often use GPS.

[jddh1]

and unlike a drag strip they wont include reaction time

Reaction to what? It's not like they race between the lights. It would be sensible to start the timing when the car starts. I'm sure there are telemetry systems that can do it.

Agreed.

[Belatti]

And dont forget a good driver gear changer can give you several tenths less...