Roof Box and reduction of range

[AnloTaycan2022]

Has anybody done some testing on the range with and without a roof box installed.

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[JimBob]

Did you mean economy?

 

[AnloTaycan2022]

Range. Distance with and without a roif box

 

[Needsdecaf]

These videos might give you an indication of what kind of percentage drop you could expect. Of course car is different as is the box, so your results will vary.

 

[AnloTaycan2022]

to avoid anyone to have to listen to the whole thing, the conclusion is 13% loss of range. So if we assume in general 15% in average, it is probably a safe assomption. So a roof box in the winter can be something to be cocerned about as we already lose probably 20 to 30% of range already plus another 15%: It is almost half of the whole baterry range being lost.

 

[thecoloradokid]

to avoid anyone to have to listen to the whole thing, the conclusion is 13% loss of range. So if we assume in general 15% in average, it is probably a safe assomption. So a roof box in the winter can be something to be cocerned about as we already lose probably 20 to 30% of range already plus another 15%: It is almost half of the whole baterry range being lost.

I think you are being conservative in your range loss assumptions. You will want to remember that a Taycan is no where near as efficient as a Model 3.

I have driven quite extensively with a bike on top of my Taycan in both summer and winter and saw 10% to 15% range loss in the summer and more than 20% range loss in the winter. Put a box on top of a Taycan I bet you will take a 40% loss in range if you are doing highway speeds, and probably more in the winter.

here are details on range impact with just a bike on top of a Taycan:

https://www.taycanforum.com/forum/t...d-cold-temps-efficiency-info.3152/#post-43993

 

[Midlifecrisis]

I think someone posted on here that just leaving the roof bars on dropped the range by 10%. A box will knock it down very heavily, especially in winter. It will also be very speed dependent

 

[AnloTaycan2022]

I think we are all saying the same. Assuming a loss between 20 to 30% due to winter and a loss of at least 15% to 20% for a roof box, we lose up to 50% of the battery. So for a normal range of 400km you end up leaving home with a range of 200km if you are at 100% charge really. If you only charged at 80% you leave home with no more than 160km which is 100 miles. If you want to keep 20% at the arrival to your fast dc charger, it means you need to charge every 80 miles (98km) ……

 

[Kayone73]

Has anybody done some testing on the autonomy with and without a roof box installed.

Why do you keep using the word 'autonomy'? I think you're asking the wrong question.

 

[Mike in CA]

Why do you keep using the word 'autonomy'? I think you're asking the wrong question.

Maybe there is concern that a roof box will reduce the Taycan's ability to self-govern....

 

[JimBob]

And if you are going uphill and there is a headwind, you won't get to the end of your driveway.

Reductio ad absurdum

 

[AnloTaycan2022]

Well, in other words a roof box in the winter may not be a very good idea

 

[Jrkennedy37]

My Panamera Sport Turismo with the roof box is a ~25% hit @ 80mph and dramatically worsens at speeds above that. I’d anticipate at least the same for a Taycan or any EV.

 

[Swissbob]

We’re on holiday in Austria with roof box. This is the journey here from Switzerland with full roof box at highway speeds. It’s the new aero Roofbox. Only 10-15% down on normal consumption

 

[Midlifecrisis]

It must be a very well designed roof box. I wonder if they quote the drag factor?

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