# Forums

## Distance and speed versus time

## Distance and speed versus time

Submitted by rongrootegoedfo... on Sat, 2019-02-16 14:43

As you drive faster you will do more distance in an hour but your battery will be empty earlier. Going slower will take more time driving, but you be charging maybe one or two times less.

In the Europe (the Netherlands) were I live a common speedlimit is 130 km/h (appr. 81 mph) on most highways.

So suppose you drive with 120 km/h (average) on the highway doing a distance of 500 km and the temperature is about 20 C. (68 F).

What will be the optimum speed to drive (if money does not play a role?) In other words what speed to drive with the model 3 (long range version) on highways doing long distances? 90 km/h, 110? 140?

Bighorn| 16 februari 2019Depends on charger speed

In the US, with superchargers, optimal speed for a Model S is about 80 MPH. It’s much higher in the Model 3 because of the charging profile.

Pepperidge| 16 februari 2019Probably 30~35 mph for Model 3 (PMSRM)

https://cleantechnica.com/2018/07/15/tesla-range-plotted-relative-to-spe...

https://cleantechnica.com/2018/08/19/tesla-model-3-is-the-most-efficient...

billlake2000| 16 februari 2019Go 55. Fewer collisions.

Halbach| 17 februari 2019What Bighorn said....Go fast, burn juice, get to supercharger with low SOC and charge very fast for 20 mins and get back on the road and punch it. That's the fastest way from point A to point B.

gmr6415| 17 februari 2019On a long trip when hedging range for the next supercharger with a predicted arrival SOC of 4% I've dropped below 70 mph by a mph or two and gained SOC at arrival by as much as 12% over a 2+ hour drive.

Since then if I'm in a similar situation 68 mph is my target to gain range over a long distance.

rdavis| 17 februari 2019Some of that calculus would depend on distance to next SC. Optimal has a lot to do with SOC of battery at time of charge. “Optimally” you’re going to want a very low SOC when you reach the SC.

gballant4570| 17 februari 2019Increasing speed is linear, while the drag due to increasing air resistance is not. Driving faster to get there faster and then charge to drive faster very much depends on charger availability. However, perhaps the OP was thinking mainly about travel time.....?

jjgunn| 17 februari 2019I try to go from SuperCharger to SuperCharger with no less than 20% battery remaining. Gives me a nice buffer of 50-60 miles just in case.

In a previous study, I think I once read 73 MPH is the optimal speed for distance/efficiency travel.

Magic 8 Ball| 17 februari 2019Since the OP mentioned temperature it should also be pointed out that headwind/tailwind has a significant effect on the "optimization".