Used car is faulty after 4 days - can I reject it?

I bought a 2005 Ssangyong Rexton with 143,000 miles on the clock from a dealer two weeks ago. When I bought the car the seller told me that there was an intermittent engine light problem, but he said he...

Seven seater tow car

I need a reliable seven seater which will tow my caravan, 1300kg. I have 6-7k to spend. You've always come up with winners in the past, what would you recommend?