Have you ever driven a 2.0 liter SOHC 8-valve Saab 900S, from the eighties?
Or a Volvo 240 series car, in 2.1 or 2.3 liter non turbo form?
Or a 1991 Toyota Camry 4-cylinder automatic?
Or a new Hyundai Santa Fe SUV, (even with V-6?)
Or a 1st gen Honda CR-V?
Or a Land-Rover Discovery?
A 300E will absolutely slaughter those cars.
I'm sure your car is even faster than my non-stock S-class, too (I've got plenty 'o torque down low, though).
My point is, you shouldn't complain about a car that does 8.3 seconds 0-60 and tops out at 137 mph. That's a quick car, ok?