GP4: ICYMI Summer 2026

Welcome to another update covering the latest developments in the Grand Prix 4 modding community. This edition arrives a little later than planned, with real-life commitments taking priority, and the extended periods of downtime affecting the main forum also making it more difficult to gather the necessary links and information.

However, the delay has not slowed down the incredible work being carried out by the community. New and updated tools continue to expand what is possible with GP4, visual enhancements are helping the game look better than ever, and new cars and tracks continue to be released and refined. This update highlights some of the latest contributions from the talented authors keeping the game alive.

There has also been significant progress on the 2026 season content. The grid is now complete, with cars, helmets, and tyres available, alongside the release of a 2026 mod. While still a work in progress and awaiting further content from dedicated contributors, it represents another major milestone in bringing a modern season to GP4.

Two recent releases have also been highlighted separately in recent days: a new 2001 track from Hega and a 2002 track update from Naitch7, both of which deserve recognition for their contribution to the community. With that covered, let's take a look at the latest tools, updates, cars, and tracks released by the community.

New Features

I am excited that there are now two options available to fix the flickering issue in the distance. Below are some shots taken by Hega to show the difference it makes.

GP4++ v2.2

by Öggo

GP4++ continues to expand modding capabilities, introducing per-driver visor and pit engineer support, advanced rear light controls, improved GP4 Tweaker integration, real-time data access, and enhanced graphics through configurable z-buffer formats to reduce z-fighting.

More Info Download

GP4 flickering fix

by gplaps

A lightweight replacement D3D8 DLL that fixes GP4's z-buffer to eliminate texture flickering while forwarding all other Direct3D calls to the standard d3d8.dll, or to a custom d3d8_real.dll placed in the GP4 folder, allowing it to be used alongside other D3D8 wrappers.

More Info Download

GP4MD

by node91

A test release introducing tools to edit and extract Magic Data, support modern F1 sprint race formats, adjust tyre wear and fuel consumption, and tweak CC cars behaviour.

More Info Download

Helmet Installer v1.1

by Reinier Tetteroo

This is one from the archives, made in 2002, with this util it is possible to make a helmet pack, and create an auto-installer for it.

Download

Cars

While the 2026 cars have been developed and released on their own dedicated page, work on the 1999 season also continues.

1999 Minardi M01

by Hega

A complete 1999 Minardi package featuring three car models and full-season textures, with credits to quickslick for extensive reference material and research, JBS Racing Parts & Memorabilia for Monza livery reference, Enzojz for 3D model components, and soulbringer for additional 3D parts.

More Info Download

1999 Benetton B199

by Hega

Includes four car models and all textures for the 1999 season.

More Info Download

1999 Jordan 199 updated

by Hega, fongu

Version 1.1 corrects the car's scale to real-world dimensions, updates all GP4 Tweaker coordinates, and retains the existing textures.

More Info Download

1999 Williams FW21 updated

by Hega

Version 1.1 corrects the front suspension geometry, updates the tyre position coordinates, and retains the existing textures.

More Info Download

1999 Ferrari F399 updated

by Hega, ASR Formula

Version 2.1 refines the car model and textures with front wing and sponsor logo corrections, updated circuit-specific details, new Melbourne and Interlagos shapes, and revised helmet position coordinates for Irvine's Bieffe helmet.

More Info Download

New Tracks

Autódromo Monterrey, Mexico

by viking75

A recreation of the full Autódromo Monterrey circuit, featuring its distinctive chicanes and a recreation of the iconic bridge start.

More Info Download

1967 Monaco fix

by viking75, ginoblade

This update on ginoblade's original work, fixes the pit entry, allowing proper access to the pits, and removes the rail collisions at the final turn/start-finish section and Mirabeau corner.

More Info Download

1972 Osterreichring

by jcgrj, Pedro27, Jcaranti

A 1972 Osterreichring layout rebuild, based on the original work by Pedro and Jcaranti.

More Info Download

1972 Monaco

by Viking75, Pedro27, Jcaranti, ginoblade

A 1972 Monaco layout update built on Pedro and Jcaranti's work, featuring Ginoblade's period-correct objects, custom additions, and modifications to reflect the era, including the relocated pit area introduced in 1972.

More Info Download

As always, this would not be possible without the dedication of the many authors who continue to support the modding community with new tools, updates, and content. A special thanks goes to everyone contributing to the 2026 season projects, even those not covered in these posts — your work is equally valued and appreciated.

Until next time, happy racing!

GP4: Thruxton by Viking75 - Improved AI and Better Racing

Over the next few days, I have a few smaller updates to share with you. I was going to put everything into one big post, but on reflection, it will be easier to track and find information if they’re split up.

First up: I really enjoyed Viking75’s version of Thruxton — one of my favourite UK tracks. It’s a fast, flowing track where maintaining momentum is everything, and small tweaks to AI behaviour can make a huge difference to how natural the racing feels.

This update focuses primarily on the cc-line. For those unfamiliar, the cc-line defines the racing line used by the computer-controlled cars, but it also influences keyboard steering behaviour. Thanks to the great tutorial written by prblanco over at F1 Virtual, I was able to quickly get up to speed and have a go at creating a new one.

This is my first attempt. I think it’s an improvement, although there’s still room for fine-tuning — particularly around the long right-hander at Goodwood. Church corner remains a great challenge, and I really enjoy the different lines you can take through the Campbell–Cobb–Seagrave complex. The lap times of the computer-controlled (cc) cars are much better now, and keyboard driving feels far more intuitive.

I've also updated the track-side cameras, based off the late 1990s BTCC era. 

Here’s a short video of a quick six-lap race using my WEC mod.
I’m racing on the keyboard. 

Lap one, into the first braking zone — and I’m a little embarresed to highlight it! I brake too late, a slight misjudgment… and I give the Alpine a rather firm introduction to the runoff area. Not my finest moment.

But our car is fine. Keep calm and carry on!

By the end of the lap, there’s more drama! The Penske Porsche ahead is fighting hard after battling the Jota-run Porsche, and as they approach the final chicane it all gets a bit untidy.As a result the Penske-Porsche struggled to navigate the final chicane and I offer a little nudge on the way past.

There isn’t a huge amount of grip in these cars, so the corners are more challenging than they would be in modern F1 machinery around this track. Touring cars here are great fun as well.

I really enjoyed chasing down the pack, setting up an exciting last-lap tussle for second place with the Cadillac. I completed an overtake at Goodwood, only to run wide at Church and hand the position back. Only the final Club chicane to go and now it's the Cadillac's turn to make a mistake. The door is open, and I was able to sprint past on the run to the finish line. An exciting close to an eventful race. 

Next up we have a demo of the external track cameras, here using the 1994 BTCC mod by Huskyman49. Lots of fun in these kinds of cars.

Thruxton (GB) track download

Download the original track by Viking75 and install my update over his files

Download Thruxton track Download fongu's update

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: ICYMI - Summer 2025

It's been a little while since I have posted on my blog. Inactivity on the blog does not mean that I am not busy working on projects, but mods takes time and dedication and sometimes real life has to take precedence.  

You may have noticed, this site has been going through a bit of a rebrand, hopefully to make things easier to see and find. This is not least because there's close to 100GB of downloads now available on this blog.

However, that has not stopped the community from being busy and sharing their works. 

There's been a flurry of activity on the 2025 cars, and Excalibur and Isaint have been doing a great job in bringing the entire grid to Grand Prix 4. 

New Tracks

Magny-Cours 2001 HD AI

by Hega More Info Download

Autódromo San Nicolás - Argentina

by Viking75 More Info Download

1964 F1 Zeltweg - Austria

by Viking75 More Info Download

Circuit de Invalides, Paris, France

by Viking75 More Info Download

Mods

F1 1991 CSM Mod

by Kerleyf1

This is a modernisation and update to one of the classic GP4 mods

More Info Download part 1 Download part 2

2005/6 ChampCar CSM Mod

by Lee1971/RSP

This is not a new mod, I have simply converted it to be used via CSM

More Info Download CSM Mod

SkaningeN's updates

F1 2011 add ons

by SkaningeN Add On Info Download add-on pack 2011 Helmets Info Download 2011 Helmets Tyres & Rims Info Download Tyres & Rims

Cars

1997/8 Steering Wheels

by rracunis

This pack includes internal and external steering wheels. **updated 4th September 2025**

Add On Info Download pack

2003 BAR Black Test Car

by Ross Hunter, CTDP

This is one is from the archives, thanks Ross Hunter for sharing it with me back in the day, and Quickslick for requesting this (or one very similar to this).

Add On Info Download

1999 McLaren MP4/14 updated

by Hega, CR Formula

A very nice update to the front wing and rear wing at specific races. 1999 is coming together nicely

Add On Info Download

We have a great community with lots of talent still modding this game. Enjoy and keep racing!  

GP4: ICYMI March 2025

For the first time in 2025, I wanted to update you on some of the new downloads and updates available for Geoff Crammond's classic game. 

It amazes me that over 20 years after the release of the game that there are new tools and editors to improve the game are being made available. 

I'm also in awe of those who have the time and commitment and devotion to make a whole track. 

Also in this update is a slight update to an existing mod and some new sounds to enjoy in GP4. 

Before we get going with the recent updates, you can check out, separately, all the 2025 downloads available here: 2025 Downloads

Individual Meshes & Textures - updated and improved
There's actually been multiple updates since this was first released. By injecting a dll into the game, it allows previously impossible options that are now available to editors. Plus, with the old csmprocess file, it is possible to enable these things via CSM.  Individual internal cockpits, a proper internal cockpit visor, individual collision meshes and a fix for the 3D rims reversed tread bug are all now possible with this tool.
by Öggo  | Info

GP4 Mesh Tools for Blender - updated
This little update fixes a bug that introduced some weird graphical glitches when updating pit props. Thanks to Öggo for working with me to diagnose and fix the issue.
by Öggo  | Info

GPF (Menu Fonts) Editor
This lovely new tool not only helps you edit the font files in the menus for GP4, but it also opens up the possibility to have high resolution fonts too.
by Öggo  | Info

Helmet Visor Colours
Another helpful fix is an age annoying uneditable item in GP4. Originally, the Arrows drivers had orange tinted visors and one of the Minardi drivers had a green tint. This was great for 2001, but it was annoying it continues to be seen in mods. Now this can not only be remedied, but all visors are now customisable per driver.
by Öggo  | Info

1998 Trackpack
Following on from created lovely high resolution trackpacks for 1996 and 1997, we now have the same treatment for the 1998 tracks. Lovely work in giving some of these older tracks a new lease of life.
by Naitch7 | Info

1987 non-CSM mod updated
Thanks to Jose Gomes on doing some edits to the existing non-CSM version of the 1987 mod:  - change to FULL HD views and positions - change cockpit and steering wheel - fix mirrors - fix crash model of gp4 cars - update sound and commentaries  At the moment there is no CSM version of this mod, but hopefully that will be done soon.
by jcgrj | Info

1999 Williams FW21
It's fantastic to get new cars being added to the GP4 community. This beautiful Williams comes with 4 shape variations and a full season's worth of textures. The 1999 grid is starting to fill up with some fantastic quality cars.
by Hega (Quickslick, kedy89)  | Info

2023 Lusail International Circuit, Qatar
Built on the dat file by prblanco, drt01 has carefully done the 3D work and created a fantastic atmosphere to this track that has now become a regular on the F1 calendar.
by drt01 |  info

Le Mans Petite Sarthe - 2024 version
Due to the limitations in GP4, we have to settle for a shortened version of the famous track used for the Le Mans 24 hour race. Thanks to Davide for updating the track to 2024 standards, ideal for the IMSA vs WEC mod I worked on last year.
by drt01 | info

Adelaide International Raceway
This is a real race track from Viking75, and it was largely used for touring cars and junior single seater races.
by Viking75 |  info

San Carlos, Venezuela (Fictional track)
This fast track has the horizon from San Carlos in Venezuela.
by Viking75 |  info

Pasadena Raceway (Fictional track)
Viking says "I am exploring the limits of GP4 builder's possibilities. I built a 19 km circuit, with 3924 sectors. It cannot go beyond 4000 sectors. I added a lot of heavy objects to see if it still worked and it does. The lap time is 4mn 25, very long. The circuit is very winding but with very wide turns. Thank you to F1 virtual for the building at the pit entrance."
Viking75 |  info

1979 Ferrari 312T4 Engine Sound
Jose Gomes continues his good collection of engine sound updates with this one from the end of the 1970s. This Ferrari sound fits really well specifically with the 1979 mod, and other similar era seasons.
by jcgrj |  info

F1 WGP Pit radio sounds
This is a fun add-on with sounds from the classic F1 WGP game. These sounds can be implemented via GPxPatch
by RegularJohn | info

And some news from me...

1994 Tyrrell 022 Yamaha
This is not a new download, but I was asked if I could share the 1994 Tyrrell separately from the mod. Here it is as a stand alone download, the Australian GP version.
by fongu | Info

and there's a new page on this blog: Fictional Cars

Well, all that's left to say is happy racing.