Scotty shows how it's often not a smart idea to buy a modern Mercedes. Sure, decades ago they were bulletproof tanks, but they are now often endless money pits that have the lowest resale value as they age.
I agree that it's not a good idea to buy a Mercedes. Look at the 2017 Mercedes-Benz E300 that Consumer Reports currently has. When the car was new, it was worth $70,000. But now, it's worth $43,000. So the car lost $27,000 worth of value in 1 year. It's also the same color as your Celica anyway.