WLTP range vs Motorway?
Discussion
My first dip into EV so apologies! I have been considering a job with a 120 mile (60+60) commute, South Norwich to Cambridge.
I've been looking at cars with 200 mile published range, thinking heater, driving style etc might knock it down to a realistic 150 and leave me with 30 in the "tank" for safety. Man maths says £300 pm on diesel could be £100 on electric and £200 lease/PCP etc. I'm well aware that's "lost" money, but so is buying diesel/petrol and setting it on fire.
I looked at the 208e on the Peugeot website and they say on there 80mph might knock the range down by 50%!
Is that realistic? 90% will be dual carriageway.
Should I be looking at 300 mile range cars?
I've been looking at cars with 200 mile published range, thinking heater, driving style etc might knock it down to a realistic 150 and leave me with 30 in the "tank" for safety. Man maths says £300 pm on diesel could be £100 on electric and £200 lease/PCP etc. I'm well aware that's "lost" money, but so is buying diesel/petrol and setting it on fire.
I looked at the 208e on the Peugeot website and they say on there 80mph might knock the range down by 50%!
Is that realistic? 90% will be dual carriageway.
Should I be looking at 300 mile range cars?
Not sure if posting links is accepted on here?
assuming not search EV database and look at the excellent data on there.
Most electric cars (except Taycan) only have a single speed gearbox so high sustained speeds don't help with range, the issue is compounded because you get very little energy recovered through the braking systems.
The 208 only has 45kWh useable battery, compared with 58kWh on the VW ID3 as an example, there are some deals around on finance on the ID3 which I would get ahead of the 208 these days.
As with all EV's home charger and pre heating in cold weather makes a massive difference if you test one.
assuming not search EV database and look at the excellent data on there.
Most electric cars (except Taycan) only have a single speed gearbox so high sustained speeds don't help with range, the issue is compounded because you get very little energy recovered through the braking systems.
The 208 only has 45kWh useable battery, compared with 58kWh on the VW ID3 as an example, there are some deals around on finance on the ID3 which I would get ahead of the 208 these days.
As with all EV's home charger and pre heating in cold weather makes a massive difference if you test one.
EVLATECOMER said:
Most electric cars (except Taycan) only have a single speed gearbox so high sustained speeds don't help with range,
I'm not sure that gearbox or lack of has any real difference on how much energy is used to keep you at 60mph vs 80mph. That's simply down to air resistance increasing and rolling resistance increasing - the faster you go, the greater the resistance and so the more energy required to keep you at that speed.Jimbo. said:
I’m probably just talking crap here, however isn’t the Ioniq EV meant to be pretty consistent, staying close to its WLTP range (193 miles) regardless?
NopeCheck the temperature and weather comparisons done in the states....
They did a same car fully charged run on 100 miles of dry road, then 100 miles of same road in the wet and the range difference was an eye opener...
phil4 said:
I'm not sure that gearbox or lack of has any real difference on how much energy is used to keep you at 60mph vs 80mph. That's simply down to air resistance increasing and rolling resistance increasing - the faster you go, the greater the resistance and so the more energy required to keep you at that speed.
Drag increases at higher speed, so you normally need more power or longer gears?buggalugs said:
Combustion cars get better range at steady higher speeds because engines are more efficient with some steady load on them but that’s not true for electric motors.
Well... that's not the reason though.The reason is that:
- an EV carries so much less energy
- Higher speeds means battle more aero -> use goes way up
- This impacts the EV that carries a lot less energy a lot harder
ZesPak said:
buggalugs said:
Combustion cars get better range at steady higher speeds because engines are more efficient with some steady load on them but that’s not true for electric motors.
Well... that's not the reason though.The reason is that:
- an EV carries so much less energy
- Higher speeds means battle more aero -> use goes way up
- This impacts the EV that carries a lot less energy a lot harder
EVLATECOMER said:
... the issue is compounded because you get very little energy recovered through the braking systems.
Eh! Where does that energy come from in the first place? If you braked on the motorway then you would have to use more than the recovered energy to get back up to speed again, so it must be more efficient to travel at a constant speed.crofty1984 said:
My first dip into EV so apologies! I have been considering a job with a 120 mile (60+60) commute, South Norwich to Cambridge.
I've been looking at cars with 200 mile published range, thinking heater, driving style etc might knock it down to a realistic 150 and leave me with 30 in the "tank" for safety. Man maths says £300 pm on diesel could be £100 on electric and £200 lease/PCP etc. I'm well aware that's "lost" money, but so is buying diesel/petrol and setting it on fire.
I looked at the 208e on the Peugeot website and they say on there 80mph might knock the range down by 50%!
Is that realistic? 90% will be dual carriageway.
Should I be looking at 300 mile range cars?
Assume you're going to be up and down the A11? I'm not familiar with the road, but is a consistent 80mph even feasible if you're working normal hours?I've been looking at cars with 200 mile published range, thinking heater, driving style etc might knock it down to a realistic 150 and leave me with 30 in the "tank" for safety. Man maths says £300 pm on diesel could be £100 on electric and £200 lease/PCP etc. I'm well aware that's "lost" money, but so is buying diesel/petrol and setting it on fire.
I looked at the 208e on the Peugeot website and they say on there 80mph might knock the range down by 50%!
Is that realistic? 90% will be dual carriageway.
Should I be looking at 300 mile range cars?
If you put cruise control on at 70mph you'd almost certainly be fine doing the journey in a 200 mile EV even in the very worst weather. The time difference is from 37 minutes at 80mph to 42 minutes at 70mph, so only 5 minutes added to your journey. Or drive slowly to work and faster back home
The e208 is a 50kWh battery, so maybe work on 3 miles per kWh at 70mph? It doesn't sound like it's best choice tho, if you want a small EV the Zoe is worth a look - newer versions are a big step up and would eat that journey without problem. I've got an eNiro and echo any positive comments about the Korean brands in terms of range etc.
There are PAYG fast chargers at Thetford and Attleborough as well, so even if you misjudged on the way back you'd have no real issues.
Edited by Knock_knock on Sunday 24th January 09:53
speedking31 said:
h! Where does that energy come from in the first place? If you braked on the motorway then you would have to use more than the recovered energy to get back up to speed again, so it must be more efficient to travel at a constant speed.
Ok, why bother fitting the systems to EVs then?EVLATECOMER said:
speedking31 said:
h! Where does that energy come from in the first place? If you braked on the motorway then you would have to use more than the recovered energy to get back up to speed again, so it must be more efficient to travel at a constant speed.
Ok, why bother fitting the systems to EVs then?In simple terms, its a lot better than nothing but not perfect.
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