when the car has 2 adults, 3 children, a boot full of clothes etc etc and with the van also on the back it does tend to go down a bit so could do with some extra strenght,
i might fit some heavy duty springs an see if it makes a difference,
i havent actually towed the van with this car but had a 2003 mondeo ghia last year and towed it fine but just felt it could do with being a bit harder,
in hindsight we should have kept our discovery that had air suspension so would keep the same level regardless of what was in the car.