NFS Most wanted Ultimate speed pack DLC

I am having this same problem. It looks like there is the same problem listed in these threads:

http://answers.ea.com/t5/Need-for-Speed-Most-Wanted/FiX-the-Fix-Post-Update-problems-xbox360/m-p/285482#U285482

http://answers.ea.com/t5/Need-for-Speed-Most-Wanted/XBox-360-Constantly-Prompted-To-Download-Multiplayer-Update/m-p/308238#U308238

WITH NO SOLUTION.

help EA, this is obviously not an isolated incident

Found a method that worked for me and a few others.

Link to solution

To solve DLC problem on PC You should:

1) delete folder:     {windows drive}:\ProgramData\Origin\LocalContent\Need for Speed(TM) Most Wanted

2) restart Origin

3) wait till origin verify game data

4) run NFS:MW

5) Go to shop

6) Wait till game ask to press [Enter] to go into Origin Store

7) Check if You have DLC bought/installed

8) Get back to Game World

9) Cars should be available in EasyDrive

This solution worked for me and 2 more people, so im pretty sure it will work for You also

Please, hit XP if this solved You problem