# Mercedes-AMG GT4 (2018–present)

- Source: https://racingcarnetwork.com/wiki/mercedes-amg-gt4/
- Publisher: Racing Car Network (racingcarnetwork.com), the race car marketplace
- Type: car · Brand: Mercedes Amg
- Discipline: gt-racing
- Series: gt4
- Era: 2010s
- Last updated: 2026-11-06

The Mercedes-AMG GT4 is the factory customer race car for the SRO GT4 class, built on the AMG GT R road car. It arrived for 2018, was updated in 2020 and re-homologated in 2025. It suits customer teams and amateur drivers who want a durable, easy-to-drive GT4 car.

## Specifications

| Spec | Value |
|---|---|
| Engine | AMG 4.0-litre twin-turbo V8 (M178), 3,982 cc, front-mid mounted [2][14] |
| Power | Up to 350 kW (476 hp) for the 2020 car, set by Balance of Performance; launch material quoted up to 510 hp [1][2] |
| Torque | Up to 630 Nm (2020 car, BoP dependent) [2] |
| Weight | Under 1,390 kg base; 1,435 kg minimum plus BoP ballast in SRO GT4 America, October 2025 [2][8] |
| Gearbox | AMG six-speed sequential transaxle, pneumatic paddle shift, adjustable mechanical limited-slip differential [2] |
| Chassis | Aluminium spaceframe from the AMG GT R, steel roll cage, composite and natural-fibre body parts [1][2] |
| Brakes | 390 mm front and 355 mm rear discs, six-piston front and four-piston rear calipers, adjustable ABS [2] |
| Fuel Tank | 120-litre safety tank [2] |
| Years | Revealed July 2017; racing from 2018; current homologation valid to 2029 [0][6] |
| Built | More than 120 delivered by March 2020; later total not published [2] |

## History

Mercedes-AMG confirmed a GT4 programme in December 2016, at its season-end awards dinner in Stuttgart [12]. The car was shown at the Spa 24 Hours in July 2017, priced at €198,850 before tax [0]. It used the AMG GT R road car as its base and kept the twin-turbo V8 [0][1]. The aluminium spaceframe came from the road car, with a steel roll cage added [1][2]. Power drives the rear wheels through a six-speed sequential transaxle [1][14]. Development partner HWA ran three prototypes in test races during 2017 [11].

Testing included a 30-hour endurance run at the Lausitzring and a planned 30,000 km of track work [0]. First customer deliveries were due at the end of 2017, with racing from 2018 [0]. By March 2020 Mercedes had delivered more than 120 cars to customer teams [2]. Power, weight and fuel are set race by race through Balance of Performance [2][8].

In March 2020 Mercedes launched an updated GT4 aimed at endurance racing, priced at €209,000 before tax [2]. Brake cooling, the oil cooler layout and the rear track rods were revised, and GT3-style LED lights were fitted [2][3]. Earlier cars could be brought to the new homologation with an update package [2][3]. A Japanese team engineer said the kit fixed the oil temperature problem of the 2018 car [5].

In April 2025 SRO and the Belgian federation RACB granted a fresh homologation, valid until 2029 [6]. The update brought engine calibration changes, natural-fibre splitter and wing parts, rain lights and revised rear dampers [6]. Owners buy it as a re-homologation kit priced at €7,990 [6]. The car races in GT4 European Series, GT4 America and IMSA Michelin Pilot Challenge, among others [6].

## Palmarès

From its 2018 debut to March 2020 the GT4 started 363 races, with 53 overall wins, 151 class wins and 137 podiums [2]. That tally included three class wins at the Nürburgring 24 Hours [2]. In Japan the car took the Super Taikyu ST-Z class title in 2019 and 2020 [4]. In 2020 AMG GT4s won four of the five ST-Z rounds [5].

## What to check before you buy

Confirm which homologation the car matches: original, 2020 update or 2025 kit: SRO GT4 cars are only eligible with the homologation file and an SRO GT4 certificate. The 2025 kit carries eligibility to 2029. Ask for the engine distance and the lifing records for engine and gearbox: One owner reports an engine rebuild point of 40,000 km. Sellers advertise lifing done to factory schedules, so ask to see the paperwork. Check that the 2020 oil cooler layout and brake cooling parts are fitted on a 2018 or 2019 chassis: Without them the car can overheat its oil and brakes in long races. Inspect the rear track rods and ask whether they are the 2020 longer-life parts: Mercedes changed these parts in 2020 to extend their life. Make sure the laptop tuning cable and access to the AMG customer portal come with the car: Power levels are set by laptop. The portal holds service and setup data, torque figures, manuals and the spare parts catalogue. List the spares package: wheel sets, bodywork, splitter, skates and stands: Used cars are often sold with extra wheel sets and body parts. Their value changes the real price of the deal. Ask about accident history and check the aluminium spaceframe: The chassis is an aluminium spaceframe from the GT R road car. Repairs to it are a specialist job.

## Did you know

- Former DTM champion Bernd Schneider was one of the development drivers, and the car completed a 30-hour endurance simulation at the Lausitzring [0].
- The power dial offers ten settings, each worth about 7 hp, changed by laptop [7].
- The 2020 car introduced a natural-fibre bonnet edge, and the 2025 update added natural-fibre splitter and wing parts [2][6].

## Frequently asked questions

**What is the difference between a 2018 AMG GT4 and the 2020 Evo?** The 2020 car has better brake cooling, a new front disc, a re-arranged oil cooler, longer-life rear track rods and GT3-style LED lights. Mercedes sold the same changes as a kit for older cars. A 2018 chassis with the kit can match the 2020 homologation.

**Is the AMG GT4 still eligible to race?** Yes. In April 2025 SRO and RACB granted a new homologation valid until 2029. To use it, a car needs the re-homologation kit, priced at €7,990 when announced. Check that the seller has fitted it and holds the paperwork.

**How long does the engine last between rebuilds?** One North American owner reports a rebuild point of 40,000 km for the V8. We could not open an official Mercedes schedule. Ask the seller for the lifing sheet and the distance on engine and gearbox.

**Why do AMG GT4s sometimes look slow in results?** The car is easy to drive, so Balance of Performance often adds weight and cuts power. One IMSA owner ran about 180 kg of extra weight. The handicap changes by event and series, so check the current BoP sheet.

**Where do I get parts?** Mercedes-AMG supplies parts and technical data through its customer racing portal. In North America the parts operation is run by Multimatic in Mooresville, North Carolina. A Japanese team reported parts arriving in about a week by airmail.

## Sources

- Mercedes reveals new customer GT4 challenger for 2018 season — https://www.autosport.com/gt/news/130909/mercedes-reveals-new-gt4-car
- New Mercedes-AMG GT4 Race Car Reporting For Duty At Spa-Francorchamps — https://www.carscoops.com/2017/07/new-mercedes-amg-gt4-race-car-reporting/
- Mercedes-AMG reveals new GT4 model for its customer racing programme — https://www.racetechmag.com/2020/03/mercedes-amg-reveals-new-gt4-model-for-its-customer-racing-programme/
- Mercedes-AMG Reveals GT4 Evo for Debut This Month — https://sportscar365.com/?p=87269
- Super Taikyu machine focus: Mercedes-AMG GT4 (page 1) — https://www.as-web.jp/domestic/667277
- Super Taikyu machine focus: Mercedes-AMG GT4 (page 2) — https://www.as-web.jp/domestic/667277/2
- Mercedes-AMG Rolls Out GT4 Update; Extends Homologation — https://sportscar365.com/?p=133327
- An Overnight Sensation: The AMG GT4 — https://nasaspeed.news/cool-rides/an-overnight-sensation-the-amg-gt4/
- Balance of Performance SRO GT4 cars, Indianapolis — https://www.gt4-america.com/documents/notice/1822/73d415a0481e5b646400817963b326.pdf
- 2023 Mercedes-Benz AMG GT4 Race Car — https://www.pcarmarket.com/auction/2023-mercedes-benz-gt4
- For Sale: Mercedes-AMG GT4 — https://www.gt4europeanseries.com/news/528/for-sale-mercedes-amg-gt4
- Mercedes-AMG GT4 — https://www.ultimatecarpage.com/car/6895/Mercedes-AMG-GT4.html
- Mercedes-AMG to Build GT4 Car — https://sportscar365.com/?p=47194
- racingcarnetwork.com search: AMG GT4 — https://racingcarnetwork.com/?s=AMG+GT4
- PCarmarket Is Selling A Weapons-Grade 2023 Mercedes-Benz GT4 Race Car — https://www.motorious.com/articles/handpicked/2023-mercedes-benz-gt4-race-car/

## Related entries

- Mercedes-AMG GT3 (2015) — https://racingcarnetwork.com/wiki/mercedes-amg-gt3/
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