Never heard or read about inbuilt assymmetry in wheel suspensions in European
cars making them pull to the right.
If it pulls to the right:
1) road surfaces are usually not flat but lower at the edges so water moves
away. On a non-horizontal surface the car moves freely following gravity to the
side where the surface is lower. So on a small road you might feel the pulling
and it is ok.
2) If the right tire is underinflated, the car will also pull to the right.
3) On a wide road the slope should be very small, so pulling should not be felt.
I would not believe the salesman if he cannot support his statement with any
kind of reliable source and keep my finger off this car.
Regards
Viktor, Europe