No problem if you go by car, just to remind, before go just make your car full check up, tyres should be in good condition, better to change new battery, change engine oil and filter, brake pads, brake oil and air filter, coz its 1450km from doha to Makkah, use GPS, if you book your hotel in advance, is much better and tell them you need parking as well, most of the hotels are providing parking also, otherwise there are parking lots available at walking distance from Haram, they are charging by per hour, if you make deal with them for how many days is your stay is more better, just remember, its very far, and ladies are not allowed to drive in saudi, and you may feel sleep during the drive, so if you keep 1 more driver with you, is good, also when you want to rest, stop at any patrol station there you found restaurants, those restaurants may provide you rest rooms by per hour bases.

I may provide you the road guide if you plan to go by road.

May Allah accept your niyyah and Umrah and make ease for you and all who are with you.

regards