As David said the PT cruiser has an incredibly low tow limit, You dont state whether you are looking at petrol or diesel, we had a PT cruiser for a week as a loan car from the dealer, it was a 2.4 petrol and drank fuel, on the motorway at a steady 70mph the onboard computer was showing 15mpg. I mentioned this to the dealer thinking that there might be a fault with the car and was told they are thirsty cars.