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Vehicles in Motor City Online could be customised for improved performance or for an individually adjusted appearance.

Each vehicle was placed into a series of Power Classes based on their power to weight ratio, which could be changed by modifications. It was possible to race against vehicles from any Power Class.

Power Classes

Power Class Power to weight ratio (hp/lbs)
SA 0.26 or higher
SB 0.24 to 0.26
SC 0.22 to 0.24
SD 0.20 to 0.22
SE 0.18 to 0.20
A 0.14 to 0.18
B 0.11 to 0.14
C 0.07 to 0.11
D 0.07 to 0.11
E 0.07 or lower

Parts Catalogue

Performance Parts could be equipped by the player through the Parts Catalogue selecting from the Cars section. Each part was available with a varying price that depended upon the supply and demand of that item.


  • Rear End
  • Transmission
  • Transmission cooler


  • Camshaft
  • Carburettor
  • Connecting Rods
  • Cooling System
  • Crankshaft
  • Cylinder Head
  • Electrical System
  • Engine Block
  • Exhaust Manifold
  • Intake Manifold
  • Lubrication System
  • Pistons
  • Valvetrain
  • Supercharger (Blower or Nitrous Injector)
    • Nitrous Injector
    • Blower
  • Air intake point (Air Scoop or Air Cleaner)
    • Air Scoop
    • Air Cleaner


  • Exhaust pipe
  • Muffler

Brake Sets

  • Front & Rear brakes


  • Front & Rear Shocks
  • Front & Rear Springs
  • Front & Rear Sway Bars
  • Front & Rear Traction Bars


  • Front & Rear Tyres
  • Front & Rear Rims


  • Chin & Rear Spoiler     
  • Body

Detail Shop

The fenders, bumpers, running boards and hood of a vehicle were the only non-modifiable parts in the title. Some Paint Jobs were rare and not purchasable in the Detail Shop. Cars with rare Paint Jobs could be sold at a large price up to the seven-figure range or higher.

  • Top Style
  • Fog lights
  • Horns
  • Licence plates
  • Paint jobs
  • Roll bar
  • Wheelie bar
  • Window tint
  • Fuzzy Dice