Mileage mystery continues! I was wary of using the car because of charging problem but did go for a short run yesterday after fully charging it , everything seemed fine ,voltage showing 14.4 to start with them settled to 12 ish. Decided to use it this morning and it had held charge and started fine ,although did flash up'low' . But mileage had gone back to 3998 ! Nocturnal driver must have done a lot of reversing !
Anyway, did 12 mile journey with one stop and everything working fine ,now reads 4010.