A split rear axle.
The rear wheels are individually suspended, to adjust to the shape of the road.
( Most European racers have this, but few passenger cars.)
Take the opposite: the rigid rear axle. What if your car hits a rut hole?
Clunk.
Seasoned drivers wait for this thump.
In a Volkswagen, it never comes.
“Ive been tooling around in my Volks for 3 years, ” says one commuter, “and I‘m still surprised when the jolt doesn’t come.”
Volkswagen also have torsion bar suspension on all four wheels. (Not many passenger cars have this, either.)
Ordinary springs can “hit bottom.” VW torsion springs twist. The more they twist, the more spring they develop. This cradles the car. You get a sure-footed ride over rough terrain.
Crooked wheels?
Thats what keeps the Volkswagen on the level.