A car that goes from 0 to 60 mph in under a second pulls more than 2.7 g, and Tesla's claimed 0.59 seconds for its new Roadster Rocket works out to about 4.6 g. That means the driver is pushed back into the seat with more than four times their own body weight. This guide shows how to turn any 0–60 time into g-force in three steps, works through the numbers for each version of the Roadster Tesla unveiled on October 15, 2026, and explains why tires alone cannot get there.
The formula: 0–60 time to g-force
g-force is acceleration divided by Earth's gravity, 9.81 m/s². For a 0–60 mph run with steady acceleration:
- Convert 60 mph to meters per second: 60 × 0.44704 = 26.82 m/s.
- Divide by the time to get the average acceleration: a = 26.82 ÷ t.
- Divide by 9.81 to get g: g = a ÷ 9.81.
Combined: g ≈ 2.73 ÷ (0–60 time in seconds). A 2.73-second car averages 1 g; halve the time and the g-force doubles.
This is the average over the run. Real cars pull harder at some moments than others, so the peak is a little higher than the average.
The new Roadster's numbers
Using Tesla's claimed times from its Roadster page:
| Version | Claimed 0–60 mph | Average acceleration | g-force |
|---|---|---|---|
| Performance | under 1.6 s | 16.8 m/s² | about 1.7 g |
| Thrust | under 0.9 s | 29.8 m/s² | about 3.0 g |
| Rocket | under 0.59 s | 45.5 m/s² | about 4.6 g |
For comparison, a car that reaches 60 mph in 5 seconds averages about 0.55 g, and one that takes 2.5 seconds averages about 1.1 g.
Common 0–60 times in g
Using the same formula, here is how familiar 0–60 times compare:
| 0–60 mph time | Average acceleration | g-force |
|---|---|---|
| 8 s | 3.4 m/s² | 0.34 g |
| 5 s | 5.4 m/s² | 0.55 g |
| 3 s | 8.9 m/s² | 0.91 g |
| 2 s | 13.4 m/s² | 1.37 g |
| 1 s | 26.8 m/s² | 2.73 g |
| 0.59 s | 45.5 m/s² | 4.63 g |
Each halving of the time doubles the g-force, so the jump from a 2-second car to a sub-second one is bigger than it looks on a spec sheet. Going from 2 seconds to 1 adds as much force as going from a standstill to 1.4 g in the first place.
Why tires stop at about 1 to 1.5 g
A car accelerates by pushing its tires against the road, and the most it can push is limited by grip: the friction coefficient times the car's weight. Road tires have a friction coefficient around 1, which caps acceleration near 1 g. Sticky performance tires and downforce raise that limit somewhat, but not to 3 or 4.6 g.
That is why the faster Roadster versions need extra help:
- Suction fans (Performance) pull the car down onto the road, pressing the tires harder so they can push harder without slipping.
- Cold-gas thrusters (Thrust and Rocket) push the car forward directly with jets of compressed air, so the acceleration no longer depends on tire grip at all.
The same thrusters, pointed down, are what let the Rocket version hop into the air. To lift off, the upward thrust has to exceed the car's weight, more than 1 g of thrust straight up.
What 4.6 g feels like
- 1 g is what you feel standing still: your own weight.
- About 1.4 g is the average push of a car that reaches 60 mph in 2 seconds.
- 4 to 5 g pressing you back into the seat makes it hard to lift your arms or turn your head. Your body weighs over four times as much against the seat for that half-second.
Because the Rocket's run lasts under a second, the strain is brief. Sustained g-forces are a different matter: pilots train with special suits and breathing techniques to stay conscious when g-forces pulling blood away from the head last for many seconds.
Try it yourself
The 3D Flying Car Simulator has four launch modes, from a 2.5-second sports car to a 0.59-second max boost. It times your real 0–60 run and shows the peak g-force, so you can watch the numbers change with each mode. It is an independent game with simplified physics, not a model of Tesla's car.
To convert other speeds, such as km/h to m/s, use the Unit Converter. Then divide the speed in m/s by the time and by 9.81.
Common questions
How many g's is 0 to 60 in 1 second? About 2.7 g on average: 26.82 m/s ÷ 1 s ÷ 9.81 m/s².
How do you calculate g-force from 0–60 time? Divide 26.82 by the 0–60 time in seconds to get acceleration in m/s², then divide by 9.81. The shortcut is g ≈ 2.73 ÷ time.
Can a car accelerate faster than 1 g? Yes, but tires alone run into a limit near 1 to 1.5 g because of grip. Downforce, suction or thrusters that push the car directly let it go past that.
Is 4.6 g dangerous? For under a second, pushing you back into a seat, it is intense but brief. The risk from g-forces mostly comes from sustained loads that pull blood away from the head, which is why pilots train for them.
What is the fastest 0–60 time claimed for the new Tesla Roadster? Tesla claims under 0.59 seconds for the single-seat Rocket version, which is not approved for public roads.