Did I Pay Too Much For My "Unreliable" MINT Condition E60 BMW M5?

Exploring Bulgaria In A BMW M5 Competition
2018 BMW M5 vs. 2018 Mercedes-AMG E63 S Comparison | Edmunds
Did I Pay Too Much For My "Unreliable" MINT Condition E60 BMW M5?
The 2018 BMW M5 Is a $120,000 Super Sedan
Front Track: 
64.00in
Ground Clearance: 
5.20in
Climate Control: 
yes
ABS: 
yes
Wheel size: 
19 X 10.5
Width: 
74.90in
Navigation: 
yes
Engine type: 
Petrol/Gas
Rear View Camera: 
yes
Horsepower: 
600hp
at 5 700rpm
Engine Size/Displacement: 
4.40L

Also called:

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