Yes, the following vehicles are not compatible with VehicleMRI:

• Pre-OBD2 Compliant Vehicles
  VehicleMRI currently only supports USA OBD2 compliant vehicles.
• Heavy Duty Vehicles
  VehicleMRI currently only supports USA OBD2 compliant vehicles (light and medium duty).
• International EOBD and JOBD Compliant Vehicles
  Although they may be similar to USA OBD2 compliance, OBD legislation varies by country and VehicleMRI has not currently been tested for these.