I am 18 n make 1400 a month n was thinking about getting a 2004 745Li. should I?

No, you shouldn't. Not only do I own a 2003 BMW 745Li, but I also work at a mechanic shop where we work on high end vehicles. When a BMW has a problem, you will rarely leave a shop without paying at least a few hundred dollars. The oil changes alone average around $75 and up, as they use synthetic oil and usually hold around 8 quarts. I strongly suggest getting something more reasonable in the cost of repairs department. BMW parts are always expensive, and they're not easy to work on, so labor charges jump up there fast. I know it's not flashy, but something like a Honda Accord or even Toyota Camry would be a much more cost efficient choice. If you are just starting out and only make that much a month, a BMW is a bad idea. I hope this helps. Most people don't think of the cost of repairs when purchasing a vehicle, they only think of the price tag to buy it. Good luck!

absolutely not. The maintenance alone will dry your pockets up and I'm a business owner

DON'T DUE IT. I am 75 and have NEVER owned a car with more repeated check engine lights, and more problems that were extemely expensive to repair. In less than 4 years, my engine has been pulled three times in order to due simple repairs, and I am facing another episode. The car is overly sensitive and overly computerized. In 4 years, I have never gone more than two months without a repair bill. Here's the rub, my car was a lease car in immaculate condition (confirmed by a thorough pre-purchase check out). It had 68K miles. My typical bills have run $700, $2400, even $3800 - and their have been many of them. To add insult to injury, run flat tires are $260 and up, and struts run $1600....Botttom line: Look for a more reasonable and reliable car and avoid joining the "auto flash-junkie" class.