UK Owners - How many miles are you getting on a full charge?

[MickeySw]

Exactly which is why I find the whole resetting exercise pointless it's a totally false reading

Not of you know what you’re doing , as @siteguru correctly pointed out, it’s a quick way to determine battery degradation without a diagnostic tool, e.g. if the GOM shows 230 instead of 250 miles (WLTP), your SoH has reduced to 92%.

If you do a BMS calibration charge and the range doesn’t change afterwards, the predicted SoH of the HV battery is correct.

Btw WLTP range testing is done @ battery temperatures >20 deg C…

 

[Macadoodle]

The predicted range is effectively calculated based on your Accumulated Total miles/kWh x your current SoC (based on your battery pack size and SoH).

So if your miles/kWh says 3, and your 100% capacity is 50kWh then your 100% range would be 150 miles. In my SE SR this seems to pretty much correlate year round ... better range in summer, worse range in winter, but the GOM seems reasonably accurate.

However the key thing to watch is not the range, it is the percentage SoC remaining. If you reset the Acc Total meter then the predicted range will be related to the WLTP range, but your actual available range will depend on climatic conditions and driving style. Over time the Acc Total will relearn these factors.

I don't use my SE for any journey that's much more than 100 miles round trip at this time of year, hate using public charging and hate the twinge in the gut that is range anxiety.

I've started using the battery heater in the winter after an incident where the car throttled current mid- overtake, very unpleasant Never does that with a warm battery an decent SOC.

Regularly see less than 3 miles kWh with this setup though.

 

[Macadoodle]

Another thing when it comes to the miles we can expect - it's funny how we all just trust the miles / kWh the car reports. I would be highly surprised if it's not a couple of tenths off ( in favour of the manufacturer ) like absolutely every single ICE car I've ever owned which were usually 5% adrift when comparing the computer readout with a brim to brim refill.

 

[MickeySw]

like absolutely every single ICE car I've ever owned which were usually 5% adrift when comparing the computer readout with a brim to brim refill.

Might have something to do with how accurately one can measure actual fuel consumption in an ICE car?

On the other hand the Coulomb counting method (integrating current over time) used in EV’s is very accurate?

 

[Macadoodle]

Might have something to do with how accurately one can measure actual fuel consumption in an ICE car?

On the other hand the Coulomb counting method (integrating current over time) used in EV’s is very accurate?

It certainly should be but they still want their cars to look as efficient as possible I think, they're all more than happy to go along with the nonsense that is WLTP let's face it.

Thinking about the last few Diesel cars I owned, all 1.6 or 2.0 estates Ford, VW, Vauxhall. All 4 to 5 % over optimistic regardless of where I filled up, ambient temp etc.

Almost like it was the amount they figured would go unnoticed by your average Joe.....

 

[Sparky2]

Up here in the Pennines, the summer range at 100% charge was around 240 miles but it has dropped to 180 this winter which has been particularly long, cold and wet. Motorway speeds are a real range-killer so keeping below 60mph is the key to a reasonable range (MG4 Trophy LR).
When I think back to my old BMW 335d M-Sport X-Drive Touring with 200k miles on the clock, in the summer it would do up to 600 miles on one tank of diesel if you kept below 60mph. Just saying that EVs have still got a long way to go to combat range-anxiety for long journeys. The cost-per-mile used to be the winner for EVs if you could charge at home in the night on 7p/kWh but now that the Government has slapped road tax (£195 p.a.) on the MG, that advantage will soon be lost