ML 320 petrol - what's desirable in terms of optional extras

[buzzer]

I am looking for a Mercedes ML 320 petrol and wondered if there was any desirable options to look out for...

I am looking for a 2002 onwards car and have up to £4k to spend

Any buying advice also welcome!

[buzzer]

Thanks for the reply :-)

Have to say I am disappointed after looking at 5 of the ML range.... every one had rust that was simply unacceptable, so I am now looking a few Jeep Grand Cherokees