How to Add New Cars to "Grand Theft Auto 4"

Written by matt skaggs
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How to Add New Cars to "Grand Theft Auto 4"
(Jupiterimages/Photos.com/Getty Images)

In 2008 Rockstar released "Grand Theft Auto 4" to much critical acclaim and financial success. The game was available on PS3, Xbox and PC, though the PC version was the lowest-rated of the three. Rockstar did not make the game "moddable," but with some work, you can set it up to accept mods and even allow new cars in the game. You must replace an existing vehicle to add a new car, and the mod itself should specify which vehicle to replace, though the SparkIV program will do most of the work for you.

Skill level:
Moderately Challenging

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Things you need

  • Software to open compressed files (e.g., WinRAR)
  • Internet connection

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Instructions

    Make "GTA 4" Moddable

  1. 1

    Locate and download a modding patch (see Resources).

  2. 2

    Ensure that your "GTA 4" game is a clean installation. If you have altered the files, the modding patch may not work. You may have to reinstall the game if you have changed the files.

  3. 3

    Update "GTA 4" with the most recent Rockstar patch (see Resources).

  4. 4

    Install the moddable patch. Every moddable patch is different, so you must follow the instructions provided at the author's website or in the "readme" file included in the download. Usually the installation is as simple as double-clicking the patch and following the on-screen prompts.

    Prepare SparkIV

  1. 1

    Download SparkIV (see Resources). This is the program you will use you put the vehicle mods into your game.

  2. 2

    Uncompress the SparkIV file with a program like WinRAR.

  3. 3

    Run SparkIV by double-clicking the "SparkIV.exe" file from the SparkIV files you extracted.

  4. 4

    Click the "Open" button at the top of the window in the SparkIV program.

  5. 5

    Navigate to this location in the GTA IV installed data: "Grand Theft Auto IV\pc\models\cdimages". The "Grand Theft Auto IV" folder is wherever you installed the game to, which is most likely "C:\Program Files" or "C:\Program Files (x86)".

    Mod "GTA 4"

  1. 1

    Download and extract the vehicle mod you want to use. You can save this anywhere you want.

  2. 2

    Select "vehicles.img" in the SparkIV program. This is under the "cdimages" folder you selected in Section 2.

  3. 3

    Click the "Import" button.

  4. 4

    Navigate to the location where you extracted the vehicle mod files and select both the WFT and the WDT files. These files may have any name, but they will always end in ".wft" and ".wdt".

  5. 5

    Click the "Rebuild" button at the top of the SparkIV window.

  6. 6

    Click the "Save" button at the top of the window.

  7. 7

    Replace lines of data in the "handling.dat" file, the "carcols.dat" file, or both. This step is dependent on the specific mod you download; some do not require this. Check the mod's readme file to see what must be done. The lines to replace will correspond to existing lines in the "handling.dat" and "carcols.dat" files; they will have a heading for the type of car replaced, such as "sabregt." You must replace the existing lines exactly as they appear in the readme file or the mod will not work.

  8. 8

    Save the data files you changed and close them out. Your mod is installed and ready for you to use. The vehicles will appear throughout the game like the default vehicles do.

Tips and warnings

  • Modding "GTA 4" is not supported by Rockstar. If you use poorly created mods or install mods improperly, they may cause serious errors in your game.

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