Unreliability?

[vader]

So I top-up the SE last night and woke up and looked at the MINI app to tell me that the SE is fully charged and I have 165km. So I went to the garage to unplug the car and noticed that the SE on the dash told me yup, 100% charged but I have 164km range; and I checked the MINI app and yup, I do only have 164km.

The range calculation of the MINI is a thing of wonder. It could be that the voltage when disconnected *just* dropped below the next km down.

Also, the brochure said 233km based on WLTP; I have never seen 200km on my dash; is it bec the SE is defaulted to Mid mode? I have always driven in Mid mode; have not driven yet though beyond a 60km radius.

In my experience, the WLTP is pretty much spot on when you drive in sport mode and have a bit of fun. When you drive carefully, you can go a lot further. The EPA and GOM pretty much line up, which says a lot about the EPA estimate. Remember, there are only two rules when dealing with the MINI GOM. Firstly, ignore the GOM. Secondly, ignore the GOM. I know that technically, it is only one rule, but it is so important, I said it twice I have never seen more than 175km on the GOM, but I have managed 270km (once). I *average* 12.5kWh/100km, or a range of 231km. I only use sport mode

If I have 164km from a full charge, using Mid mode with AC on and nav on and music on and I want to go for a 140 km drive with an elevation of 600metres and wind gusts of 26kph, will I have 20% battery left still at destination?

You will lose around 9% (by my calculation) from the 600m. If your journey also includes 600m decrease in elevation (ie you also go down), then you will get back around 6% in regen on the way down. So you would use around 63% of the battery. I bet the GOM will by then have caught up a little and have something like 55km left (ie. 1/3 of the original range).

As a basic rule, I always look at the GOM, multiply by 4 (ie double it twice) and divide by 10. That is the *extra* range you really have. So in your example, 164*4 = 656, 656 / 10 = 65.6. Total (real) range = 164 + 65.6 = 229.6km. This works any time. If the GOM only claims 80km left, you can go a further 32km (for a total of 112km). For those interested, the GOM appears to be out by the factor the EPA uses to "guess" the range (0.7). 1/0.7 = 1.41, so close to 4/10 more.....