First welcome to the Mercedes world....thanks to grandma

1) the passengers seat - tough one. From your description, the switch and motor still works since you can hear them. That means either the cable is messed up. You'll have to remove the seat, flip the seat upside down and take a look.

2) the radio - just install a new one.

3) The sunroof - If it's the motor, you'll looking at maybe a hundred dollars for the motor alone. I'd check the switch first, then maybe grease up the rails. Mine is very slow so I just leave it closed.

4) the front right headlight - since cost is big factor, just get something that works at your local Napa or any automotive parts store. When you're more financiall stable, I'm sure you'll be upgrading to euro lights. Don't waste a bunch of money on headlights now.

5) is there any way you can point the headlights up - yes, every headlights has an adjustment.

6) fuel sending unit is bad - common problem on the mercedes. Luckily it's easy to fix....just remove and replace. Do a search on this forum, its been discussed many times.

7) On my GF's car I once used some puddy and muffler tape to plug up a hole in her muffler so that she could pass California's emission inspection. It worked well. Your only other alternative is to replace the muffler...you're looking at another couple hundred dollars if you go that route.

Fix the most important things first, then little by little get to the others. Once you've got the car mechanically stable, you can start customizing....radio, wheels, suspension, euro headlights, etc.

Good luck.

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JR
1986 Gold 300E 4Dr automatic