Regen differences

[22.1050.180K]

My first post. Let me know if it’s in the wrong place.
Yesterday I did a test to see what the difference is in the three REGEN levels on my 2022AGTP. All three tests were done in the SMOOTH mode. I drove a little over 10 miles to and from the pet store, identical streets, stoplight, stop signs, etc. mostly in town driving, to the parking lot and back to my house. Driving very conservatively, consistently and literally almost identical driving characteristics and which lights I caught and everything were as close as I could get to the same on each of the three trips.
1ST test: STANDARD Regen. 10.5 mile round-trip, 4.64 mi/kwh
2ND test: HIGH Regen. same exact route and driving characteristics, 4.29 mi/kwh
3RD test: REGEN OFF. 2.95 mi/kwh
So it is quite obvious that regeneration will make a difference, as opposed to it being completely off, but literally almost absolutely no difference from standard regen to high regen. I know it was only a 10 mile loop, but does anyone else have any similar tests? I’m going to now check forums and see what you guys post, as I have just joined today and Love my LUCID!

 

[Truthlesshunter]

yeah i constantly wonder about this. Especially since when i had my taycan, which regen i should use varied by the type of driving i was doing (backroads driving 50 mph/ 80kmh with little to no stops meant no regen mode was the best, etc). I would think that high regen would be best for city, med on the highway, and off for backroads....but there's no set rule. I wish there was better guidance for this

 

[Pragmatic]

The regen that generates the least regen and still requires no (or almost no) brake use is best for economy.

 

[22.1050.180K]

yeah i constantly wonder about this. Especially since when i had my taycan, which regen i should use varied by the type of driving i was doing (backroads driving 50 mph/ 80kmh with little to no stops meant no regen mode was the best, etc). I would think that high regen would be best for city, med on the highway, and off for backroads....but there's no set rule. I wish there was better guidance for this

Yeah, this was in town with 25 mph and 35 mph streets. It would be interesting to check highway differences. I will do that soon.

 

[22.1050.180K]

The regen that generates the least regen and still requires no (or almost no) brake use is best for economy.

I now completely agree. I will now always use standard regen in town, for very little brake pad use, and great energy recuperation.

 

[Saksak]

The regen that generates the least regen and still requires no (or almost no) brake use is best for economy.

We can be more precise. In order of priority for the best economy:

1. Don’t use brakes. Every time the brakes are applied, 100% of the kenetic energy is wasted.
2. Don’t use regen. Every time regen is used, 30% - 40% of the kinetic energy is wasted.

The best economy is achieved by coasting to a stop, letting the wind and tire rolling resistance slow down the vehicle. In practice, coasting to a stop is impractical, as it’s impossible to predict traffic lights and drivers behind you will get upset at your very gentle deceleration.

There is nothing standard regen can do that high regen can’t. What you gain with standard/low regen is finer control - the same accelerator travel results in less change - but you are forced to use the brakes when you need to decelerate quickly, which is much worse than using high regen.

Using as little regen as possible with gentle deceleration is the key. If you always stay in the low regen range, you’ll theoretically get the same results, regardless of the regen setting.

On the highway, I turn regen off (it’s mapped to my steering wheel custom button) if I’m hypermiling so that I can completely lift off the accelerator to coast. It’s possible to coast with regen on by watching the regen/power line, but it’s very hard to truly coast this way.

 

[L-Dude]

With my last car, regen was triggered by the brake pedal and used to slow the car. The harder you pressed, the higher the regen. The friction brakes only kicked in <5mph. I liked that system better. I feel it was more efficient, and the brakes lasted forever.

 

[DeaneG]

With my last car, regen was triggered by the brake pedal and used to slow the car. ... I liked that system better. I feel it was more efficient, and the brakes lasted forever.

Porsche thinks so too.

 

[coma24]

It's not the case that higher levels of regen are more efficient than lower levels of regen. Rather, having high regen AVAILABLE means you have greater deceleration available to you without having to brake, that's it. If you can get by with std regen, GREAT...do that. However, depending on your driving style and the conditions, you might find it is not enough, and you end up reaching for the brake. That could be avoided if you have high regen.

I find my personal deceleration prefs are better suited to high regen, so I have it in that mode. However I modulate the throttle so that I'm rarely calling for max regen braking. Rather, I'm commanding a level of braking that is slightly more than that 'throttle off' would've given in STD regen, but less than what HIGH regen would give.