I agree with deal.. That's if your new to driving. I mean do you have previous driving experience outside qatar? If you are already a good driver and financially sound then go for brand new otherwise go for 2 or 3 year old car and you will save a ton of money assuming you will get a properly maintained car. Because normally if you are a rookie driver like everyone before, you will have some bumps and scratches here and there. So it is wiser to have a practice car first and dream car or better car later.
Cheers!