Best garage to test cars from (dublin)

We visited the notorious d12 dealers a couple of weeks ago to test used cars we are interested in.

I must emphasise we are still trying to pick what mpv we want so not at a point of buying yet.

However, we found the roads so mad busy around d12 that it was really difficult to get a good sense of the drive of each car.

I was thinking of going to Gowan Motors on navan rd next time as they have most of the remaining models we want to test (smax, 5008, another look at GP and zafira tourer). Are the roads clearer over there?

I've seen airside suggested, that's a bit of a drive for us but would it be a better place to test drive some cars away from city traffic?

We'll be going on a weekday.

Any tips appreciated. Need to move this project on!