Out of interest, which mower did you get? Our little Stiga drinks petrol like...er...a petrol drinker. Dad just bought a new Kioti mule too and great though it is, I couldn't persuade him to look at the Polaris electric one. Not even sure if you can get it in the UK.Rapid.
Changed both cars for electric last year, from diesel
Changed ride on mower from petrol to electric.
Our Nissan Leaf, if we write it off when the battery warranty expires (8 years) will be cheaper than continuing to run our 8 year old diesel corsa.
Once you have driven electric, there is no turning back
Stephen