DVA

Thank you, my budget is around the £10k mark including any jobs I may need to do on the car. This one seemed to be at the top of that budget. 

I recently went to view a Boxster S for sale and the experience for me was odd. The car looked clean all over with some small marks but nothing major. On opening the front and rear boots the carpets were very damp. The seller said he’d jet washed the car and water had probably got through the seals. On start up there was blue smoke for a second before it cleared. He wouldn’t let me drive the car, instead going through all the gears while talking loudly (could’ve been the noise of the engine). I noticed what looked like an orange Engjne management light on the dash and a red light that looked like the boot was open. When he stopped he immediately switched off the engine. There was barely a second between him stopping, switching it off and getting out. 
 

Whenever I’ve gone to look at cars, I’m able to check things like all the fluids and belts as well as suspension, brakes and tyre wear. 
 

Needless to say I won’t be buying the car, but a couple of questions.
 

Why would he turn the engine off immediately after stopping without letting it idle?

Is the blue smoke on start up a natural trait of these cars?

In future, where would I need to look for things like fluid checks and belts?
Can the dampness in the boots really be down to faulty seals due to the car being jet washed?

Its the first time I’ve looked at a Boxster as I’m looking to replace my Z4.

thanks