GP4: F1 2025 Mod update v1.2 (CSM)

F1 2025 Mod compiled by fongu

Here is another update to the 2025 mod. 

Another small update adds some updates for up to the end of the season. This includes performance files by Gitanes, as well as updated track specific weather settings. 

Excalibur has released some excellent additional liveries for the Williams and these have been included in this mod. 

Thanks also to Mailson Teles for exclusively sharing his TV style updated to 2025 exclusively for this mod. There is an option in the CSM menu to enable/disable this, under the TV overlay drop down. 

Thanks to Superman77, the external steering wheels have been fine tuned and the rev lights fit the individual steering wheels much better now. 

The Sound Hardware Acceleration has been updated to a more updated version from GitHub. It's by a number of collaborators. 

The biggest update to this release is by Öggo and thanks to the upgrade of GP4++ to v2.2. This adds modding capabilities to the rear light and blinking under different circumstances. This has now been added to the mod: 

• Now the rain light blinks in wet weather. 
• There is a ERS charging light when you lift and coast. 
• The pit lane light also blinks, but at a different speed to the others. 

Sadly, this does not fix the GP4Tweaker limitation of having a brake light to enable multiple ambient glows, but I have tried to limit it by setting the threshold to 200% brake pressure. It is not full-proof, but also the ERS charging light also comes on when braking at speed. Anyay, GP4++ works seamlessly with GP4Tweaker. 

I hope you enjoy this update. Here's a little video preview of the mod in action. 

Installation Notes

F1 2025 CSM Mod

This is a patch of the original mod, so you will need to install that first

F1 2025 Mod CSM

2025 CSM F1 Mod Update v1.2

Download and install this update from the CSM menu

Download update v1.2

GP4: ICYMI - January 2026

A new year is under way, and it's time again to catch up with the rest of the 2025 releases in the Grand Prix 4 community. It's been a busy final few months of the year and there's plenty of cool developments by new and familiar authors who have shared their work with the community.

On my side, I have now updated this blog with mirror links to most of these downloads and some on the dedicated 2025 Download Resources page.

Without further ado, let's take a look at what's been released in the community lately.

New Features

GP4++

by Öggo

This combines the Individual Meshes & Textures with the hi-res pitcrews DLL, whilst adding a new feature to have driver specific engineers, and individual meshes for engineers and pitcrews. There are other features now editable directly, such as the NoCD option, enabling advanced car-shader for internal steering wheels, and cockpit visor customisations.

More Info Download

Hi-Res Pitcrew Meshes

by Öggo

Hi resolution pitcrew meshes has been available for a while now, but now Öggo has created a working model for engineers and pitcrews. It is a proof of concept, but still a massive improvement on the original mesh from the original game. This comes with a PSD template, so I look forward to seeing some new skins painted soon.

More Info Download

F1 Championship Calculator

by Kresljedos

A new tool that is still under development by Kresljedos for calculating standings for a full F1 season, due to GP4's limitation of only a 17 track season. This runs in a browser.

More Info & Download

SkaningeN's add on Packs

2012 Cars Add-on (Season Pack)

by SkaningeN

He writes:

"So 2012 it is. And it's quite similar to the 2011 Add-on, but this time I decided to bring you an whole season set of cars in one package. Even the versions I have not edited so you can easily make your own mod if these are the cars you want to use. All versions (I Think) is included in this pack, I've done my best to spot differences, correcting mistakes on existing ones and adding missing versions. Most cars are converted from F1CM by Josekast, with a select few from Soulbringer, Hega and RSCT."

More Info Download

2012 Helmetset and Shapes

by SkaningeN

He writes:

"The 2012 helmetset now with seperate helmet shapes. This helmetset have gotten some tweaks and now also gotten the correct helmetshapes for all drivers. I've added some missing helmets, fixed some others, fixed the alphalayer on some and added new versions that seemed to be missing.

All helmets from the 2012 season (that I know of) is included in this pack and are painted to fit the correct helmetshape. And I've done the best I can to make sure each helmet has the correct visor tint for the right races. But in most cases, you can decide yourself. You can run all helmets with individual shapes or you can use all helmets with only one shape for all. But if you only use one shape, some textures will not fit properly, most cases the visor tear offs and the new visorstrips on the updated shapes."

More Info Download

2012 Tyres & Rims

by SkaningeN

He writes:

"Here is a 2012 tyreset that has it's roots the fantastic years of 2005 to 2009. With Enzojz and Lee's great talent for modding GP4 back then, I've just modernized their work a bit to bring you an updated 2012 tyreset."

More Info Download

Cars

1999 Sauber C18

by Hega

He writes

"4 different shapes + textures for full 1999 season included.

Thank you:

Enzojz for the Sauber C19 3D model which I used as a base for this car

quickslick for driver numbers

soulbringer for some 3D parts

More Info Download

New Tracks

1964 Le Mans/Circuit de la Sarthe

by viking75

A beta version of a shortened version of the Le Mans (due to limitations of GP4) was created by Viking75, a welcome addition to the tracks available for Grand Prix 4 and some of the older sports car mods

More Info Download

Utah Motosports Campus, USA

by viking75

Utah Motorsports Campus is a real american track for endurance cars by Viking75. It is unfinished, and bigger than the real version, but nice to have and drive on too.

More Info Download

1990 Denver, USA

by viking75

Another not quite finished version of the Denver track used by Champ Cars.

More Info Download

1990s Thruxton, UK

by viking75

This is one of my personal favourite tracks in the UK, with its flowing high speed bends, particular in touring cars or lower formulae cars. It's great to have this in GP4.

More Info Download

1958 Melbourne, Australia

by viking75

A real track and layout, but with a lack of pictures and videos, an imagined environment.

More Info Download

Southside Speedway, USA

by viking75

A real track and layout used by NASCARs, but scaled up due to GP4's limitations

More Info Download

1994 Circuit de Barcelona-Catalunya, Spain

by jcgrj (based on 1994 Trackpack)

A cc-line fix to update the track made by Gap177, Plodekk and Cleberpister's 1994 track with the tyre chicane.

More Info Download

2000 Melbourne, Australia

by Naitch7 (based on Hega's work)

Naitch7 continues updating tracks to 2000 spec. Austalian and Brazilian tracks have been updated.

More Info Download 2000 Melbourne Download 2000 Interlagos

Sounds

Ford Cosworth V8 1979-82 - v3.0

by jcgrj

A new update to the Ford Cosworth V8 engine for use in mods of hte early eighties.

More Info Download

Honda V6 1988

by jcgrj

A new update to the Ford Cosworth V8 engine for use in mods of hte early eighties.

More Info Download

It just remains for me to be grateful to all the authors who are helping keep the modding community alive with more tools and mods. Thanks to all those who have contributed to the 2025 season content that isn't usually featured in these posts, but no less appreciated.

Until next time, happy racing!

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