Why do British cars have a reputation for poor quality?

[dmg]

I'm skeptic to Nissan compared to Toyota, as I have heard on several occasions where the automatic gearbox fails on both Juke's and Qashqai's

That is right because Nissan is using CVT technologly (Continuously variable transmission) on their "Xtronic" gearbox
That is not really an "automatic" gearbox as it is a single gear.

More on the subject : Continuously variable transmission

 

Volvo used CVT as an option on the 340 series back in the 80s and DAF in their 600 in the early 60s; a DAF was in an episode of the excellent series Bangers and Cash recently.

A friend of mine had a Volvo 340 (or rather their parents did) and I travelled in it once.  A distinct lack of urgency is what I recall!