Real life range

[evets]

I along with four others, recently took a 160km road trip, not very far but data is useful. The battery went from 80% to 44%. That indicates an easy 320km range with comfortable head room. Obviously working from a 100% charge would shift the range by another 100km perhaps. The trip consisted of around 10% back country roads at about 70kph, and 90% four lane highway through flat paddy land at 100kph. The car says it consumed 17kWh/100km, and that’s a little bit higher than the 14.9-15.1 it gets running local errands. The lack of brake regen on the highway increases the kWh load. I’m pleased with both figures. The ‘Lane Keeping Assist’ and ACC functioned almost perfectly. Some highway curves make it slow down more than necessary. It navigates the curve just fine but overslows. A minor issue considering the entire car. I love it!

 

[MG Clive]

Very good, were any of your four road trip buddies driving EVs @evets?

 

[evets]

Very good, were any of your four road trip buddies driving EVs @evets?

No other cars. The occupants besides myself included my wife, her mother, and two sisters. It was a family outing to the mall in the adjoining province. For me it was a good excuse to drive the car.

 

[MG Clive]

Ahh sorry, I read it as a road trip with other vehicles.

 

[evets]

Ahh sorry, I read it as a road trip with other vehicles.

No worries. My English is slowly eroding due to a lack of Westerners to whom I can communicate.

 

[MikeJS]

I along with four others, recently took a 160km road trip, not very far but data is useful. The battery went from 80% to 44%. That indicates an easy 320km range with comfortable head room. Obviously working from a 100% charge would shift the range by another 100km perhaps. The trip consisted of around 10% back country roads at about 70kph, and 90% four lane highway through flat paddy land at 100kph. The car says it consumed 17kWh/100km, and that’s a little bit higher than the 14.9-15.1 it gets running local errands. The lack of brake regen on the highway increases the kWh load. I’m pleased with both figures. The ‘Lane Keeping Assist’ and ACC functioned almost perfectly. Some highway curves make it slow down more than necessary. It navigates the curve just fine but overslows. A minor issue considering the entire car. I love it!

What version? Performance or standard (long Range in UK).

 

[LenEV2016]

So in old money that's

99.5 mile trip

199 mile range +

Extra 62 miles to 100%

Pretty much a steady 62 mph journey

17 kWh/100km = 3.655125 mi/kWh
I would imagine in pretty warm weather flat roads with the Aircon going. (365 mile range)

I wonder what the drop to 70 mph will be?

 

[MikeJS]

So in old money that's

99.5 mile trip

199 mile range +

Extra 62 miles to 100%

Pretty much a steady 62 mph journey

17 kWh/100km = 3.655125 mi/kWh
I would imagine in pretty warm weather flat roads with the Aircon going. (365 mile range)

I wonder what the drop to 70 mph will be?

This would seem to suggest a max range of around 260 miles which is poor. However, 3.6mi/kwh should give around 360 miles?

 

[LenEV2016]

This would seem to suggest a max range of around 260 miles which is poor. However, 3.6m/kwh should give around 360 miles?

Yeah exactly what I was thinking, going by the figures posted they are different.

3.6mi/kWh seems more likely for the driving described

 

[salty]

No worries. My English is slowly eroding due to a lack of Westerners to whom I can communicate.

Don't worry about that. There are a lot of English, whose English is slowly eroding.

 

[MikeJS]

Yeah exactly what I was thinking, going by the figures posted they are different.

3.6m/kWh seems more likely for the driving described

Saw a post this morning on a FB page that said they 360 miles…...

 

[salty]

Saw a post this morning on a FB page that said they 360 miles…...

Definitely true then.

 

[rgledhill]

Thank you for the write-up! I'm curious about this bit:

The lack of brake regen on the highway increases the kWh load.

Do you mean that you had to brake harder than the regen was able to provide, so the physical brakes were used? Or do you mean that brake regen was set to minimum? Braking using the brake pedal will always use regen first, only switching to physical discs and pads if you ask for more braking force than the regen can provide.
This is why all "xxx regen setting is best for economy" arguments are simply myths.

 

[evets]

I apologize for my lack of clarity on regen braking. Around town/city, one is frequently lifting off the throttle pedal, and that turns the momentum of the car into mechanical energy that drives the car’s motor(s), as opposed to being driven by the motor(s). This turns the motor(s) into a generator and that generated power goes back into the battery. Coasting recharges the battery and this process is visible on the driver’s front screen by scrolling through options with a sideways press of the right side scroll wheel on the steering wheel.
Obviously cruising on a highway doesn’t include much coasting, therefore not much regen braking. Then consider that the aerodynamic drag increases by the square of the speed, and the required power increases as the cube of the speed. That means a lot more power is consumed the faster you go.
Attached is a chart I generated with a Python script some of you may find interesting and/or useful.

 

[rgledhill]

No need to apologise and your explanation is very useful for those who aren't familiar with regen and how it benefits some situations more than others. I simply wanted to make sure that any new EV owners reading this thread didn't think that regen didn't apply in motorway driving at all, or that the IM5 is any different to any other EV in this situation.

 

[MikeJS]

, or that the IM5 is any different to any other EV in this situation.

I think the IM6 and IM5 are different from many EVs in as much as the regen offered is very low.