I like used cars and am not a car fancier, just want efficient, safe and reliable 4 door. Since others will be driving it would it be best to get automatic?
Who will be driving it? The majority of British drivers drive manual cars as automatics aren't very common over here... so if the people driving the car are British, then there's probably not much point in getting an automatic.
However, if the drivers are American and used to driving automatics, an automatic might be better so they don't have to learn to drive a manual.
And as for others driving it, will insurance companies be calm about this?
Not sure how the insurance will work, to be honest. Usually the holder of the insurance policy needs to be the registered owner of the car, but I don't know how that would work if you don't drive (do either of you have a licence?). I think you can take out policies where you are covered for anyone else to drive the car as long as you give them permission take responsibility for them driving it though.
Aren't there any Toyota's or Nissan's there?
Of course there are
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I took my UK driving test in a Toyota Corolla in 2001 and I've been driving Nissans in the UK ever since (I'm British and grew up here in the UK)... in fact, my parents have owned only Nissans and Toyotas for over 20 years now!