Its a superb bike. The bike is not for the people who want to race it is for those who are steady and love the thump. I have completed 15, 000 Km. I had many long rides on it, no back pain full comfort.
About mileage - you get 35-40 in city and 45 on high way .
About Selection of the bike -
If you are tall and have a average body go for Thunderbird it will give you comfort . Thunderbird is of its kind , grasp the look and attention !!!!! Else go for Electra , it will suit you , but can give back problems on bump or on a long ride !!!
You have Average height go for Electra , its all time runner , good looks and Royal .
About Maintainability -
Both the bikes have same TwinSpark engine , First you need to master the gear shifting , as there is little neutral in every gear .
When you change the oil see for yourself that oil is changed , some showroom guys don’t change oil they just wash the bike and do some setting , my experience .
Teflon coating is good but not worth the money , you get a polish for just 400/- max , its better to take care yourself !!!!!!!!
For Good mileage maintain the speed of 40-50Km it will give 40 Kmpl mileage , change the oil as directed in manual i.e after 1000km .
Compared to other bikes Enfield are costlier in maintainance and mileage but its Royal , go for it !!!
Regards,
Amrut