GP4: 2025 stand-alone mod (GP4 Memory Access)

F1 2025 Mod compiled by fongu

Let me wish you a very happy New Year. 

I am proud to release to you the 2025 mod as a non-CSM, stand-alone version, the first mod to be released using GP4 Memory Access. 

Like the CSM mod, this is a little bit proof-of-concept than a full blown complete mod. This mod shows a working example of how to use GP4 Memory Access by Carl_gpgames and Öggo. 

I've spent less time creating content and more time in exploring new features to present to you - hoping that other authors may be able to fill in some of the gaps. 

All of the content is already compiled in the CSM version of the mod: 2025 CSM Mod

This has no tracks included, no driver changes, no additional liveries and no special helmets - it's just a generic base 2025 mod. 

What is new to this mod, and will soon be added to the CSM version, are the 2025 TV graphics by Mailson Teles. 

Installation Notes

F1 2025 Stand-alone Mod

Download

To run this mod, simply:

• extract the GP4-2025 folder anywhere on your machine. 
• Open GP4MemoryAccess.exe
• Click 'Patch & Run' on the bottom
• Enjoy racing!

GP4: 1997 Benetton B197 Renault by fongu & David Marques

I’m excited to unveil my newest release: the Benetton B197 (1997) in collaboration with the talented David Marques.

If you’ve tried my 1997 Jordan, you’ll notice immediately: this 3D model is on another level. I faced a familiar dilemma every modder knows too well — do I sink countless hours into a hyper-detailed model that could stand proudly in a modern engine? Or aim for something simpler and more in line with an older game’s limits?

This time, thanks to the wealth of reference photos from track-run B197s in recent years, I went for detail!

The result is we have a high quality car, complete with a fully built cockpit, accurate rear-end geometry, diffuser, crash structure, gearbox, and subtle internal components. The best thing is that this car is still within GP4 limits for polygon counts. 

While I tackled the painting on most of the internal elements, David Marques once again elevated the project with his impeccable mapping and paintwork on the main body, plus new 3D bolts, multiple wing specs, and gorgeous full 4K textures. Every race of the 1997 season gets its own unique livery — all thanks to David’s dedication and obsessive eye for historical detail, with help from Quickslick.

Since the B197 evolved directly from the ’96 car — itself evolved from the ’95 championship winner, which I made not too long ago, it helped me recreate some parts quickly and accurately that would usually take me a long time in making parts that are difficult to see from pictures. 

On track, the B197 had flashes of brilliance. Wurz debuted in it and immediately impressed with a podium at Silverstone. Alesi delivered a pole and several strong finishes. And of course, after recovering from illness and reeling from personal tragedy, Berger returned to the cockpit with that unforgettable, inspired victory at the German Grand Prix. This would also be Berger's swansong season finishing a strong fourth place, just shy of the podium at the final round at Jerez. 

This release is for Grand Prix 4 of course, but it is also jointly being released in F1 Challenge. 

I hope you enjoy driving it as much as we enjoyed bringing it back to life.

1997 Benetton B197

by fongu & David Marques

Download

GP4: F1 2025 Mod update v1.1 (CSM)

F1 2025 Mod compiled by fongu

I present to you an update for the F1 2025 Mod. 

This is not a big update, but it contains some fixes and some new files. 

Thanks to jcgrj for creating new sounds from the 2025 Red Bull RB21, which has been added to the mod. 

Thanks also to Gitanes for his recently updated performance files. The average and track specific performaces have been updated up to and including the Brazilian GP. 

And thanks to Excalibur for updating his Williams livery and rims with the Austin GP special livery. 

2025 Williams Austin GP livery by Excalibur

Max Verstappen has been running a transparent wing on his helmet, so I have updated the helmet shape by Jvinu to reflect that in this mod. 

There's also some fixes as well. 

The Mercedes internal steering wheel has been fixed, some of the readouts were incorrectly positioned. 

There was an error in the physics loading, that has now been rectified. 

GP4: 1993 Mod Version 2.01 updated by KerleyF1 & fongu

Thank you for downloading, enjoying and giving such good feedback on the new 1993 mod released earlier this year. My friend, KerleyF1 (grandprixmods.blogspot.com) and I have enjoyed working on this mod together.

Much of the credits for this mod goes to the Öggo, who worked on every car (except one) and given us the tools to modify this game more and more, and has worked on the whole helmet set, both shapes and textures (except one - my contribution is so small compared to this masterpiece).

Now with Öggo's recent release of his Bieffe helmet shapes pack, we now have an updated helmet for the one driver who used a Bieffe helmet in 1993, Gerhard Berger. It's really fantastic to witness the attention to detail and the skill to recreate it, and the true to life variety of helmet shapes just adds to the immersion of the mod in this game.

But this small update is not just one helmet, but thanks to rracunis for getting in touch and pointing out some issues with the internal cockpit. I do want to thank him for his contribution to the improved warning lights on the dash. I have now fixed the carbon in the cockpits, they are now much less shiny and also do not flicker.

So just a small update, but that's not to mention the number of hours that has gone into making them. I'm really grateful to work with so many different people in the community.

Installation and Download

Prerequisites

This is just an update to the existing mod, so you will need the original v2.0 mod installed, if you have not done so already.

Version 2.0 release page

Download

Download the update here. Install using CSM (part of Zaz Tools).

Download Update

GP4: ICYMI - September 2025

Welcome to September's version of ICYMI, where it's basically news from what has been released for GP4 by authors across our great community. It's always good to see old and new authors modding different areas of the game.

New Tracks

2000 HD Trackpack by Gap177

by Gap17 More Info

This is a non TSM trackpack, designed to be implemented in GPxPatch direct. Here are some Installation Notes (also included in the pack)

⬇ Download for GPxPatch

Here is a TSM compatible version, just extract the items into your Grand Prix4\Tracks folder. Thanks to KerleyF1 for putting this together.

⬇ Download for TSM

2000 Tracks

by Naitch7

Also creating excellent track updates is Naitch7 with six tracks released so far

More Info Hockenheim Imola Magny Cours Monaco Sepang Silverstone

1980 Paul Ricard / Le Castellet

by jcgrj

Based on Gezere's modern Paul Ricard track, this is nicely retro-fitted to 1970s/1980s era of the track

More Info Download

2025 Monza

by gap177

Based on previous work by TTM, Hega and Jucksman, gap177 continues to update this track to modern standards

More Info Download

Helmets

Bieffe Helmets Pack (F1, Predator, Aero)

by Öggo

More Info Download

1993 Helmet Set updated v1.31

by Öggo and fongu

More Info Download

Cars

1999 BAR 01

by Hega

More Info Download

Steering Wheels

1999 Internal/External Steering Wheels

by rracunis

More Info Download

Utilities

ric-o-mputer and dyn-a-mate®

by ricomaster

The file is in .ods (libreoffice) format. It has no macros.

ric-o-mputer®

• [physics simulator]
• generates physics values on a set of variables, from user input and referenced data.

dyn-a-mate®

• [engine map generator]
• generates a torque/power map interpolated/scaled from baseline models or user data.

More Info Download

Thanks to all those who are working so hard to keep this game and community thriving. Keep racing!  

GP4: Guide to Zaz Tools - CSM process update

Some of you have had some issues with my recent mods (1994 v4.3, 1993 v2.0, 2025 mod) that rely on the injectdll to function correctly. 

You can read more about the benefits of it here: www.grandprixgames.org

Here, I hope to share all my knowledge for those who are still struggling with it.