When BMW M Motorsport introduced the G82-based M4 GT3 for the 2022 season, it marked the brand's first ground-up GT3 programme in nearly a decade. In 2023, that car reached the DTM grid in multiple hands — among them Sandro Holzem, carrying number 56 under the Project 1 Motorsport banner. Spark Model has documented this specific entry in resin at 1:43, filling a grid slot that no other manufacturer covers.
The G82 Platform and the S58 Engine
The BMW M4 GT3 is built on the G82 M4 road car platform and was developed in partnership with Dallara. It replaced the M6 GT3 at the top of BMW M Motorsport's customer racing ladder at GT3 level. Power comes from the S58 3.0-litre inline-six twin-turbocharged unit, paired with Bosch Motorsport electronics and a sequential 6-speed Xtrac gearbox. Kerb weight sits at approximately 1,300 kg under GT3 Balance of Performance rules, with around 500 hp available in competition trim.
Project 1 in the DTM: An Unlikely BMW Alliance
Project 1 Motorsport — formally Project 1 – AO GmbH & Co. KG — built its reputation on Porsche programmes, including prominent Le Mans campaigns. Their decision to campaign BMW M4 GT3 machinery in the 2023 DTM made their grid entries among the most distinctive of the season. Sandro Holzem piloted the #56 car across the 2023 DTM campaign, giving him his most prominent platform to date in Germany's leading GT series. The combination of a team historically synonymous with Porsche running BMW hardware made this entry a genuine talking point throughout the paddock.
Spark's 1:43 Resin Craft
Spark Model produces its 1:43 motorsport replicas in resin, a material that allows the crisp reproduction of GT3 aerodynamic surfaces — the wide front splitter, the large rear wing, the complex diffuser geometry — that define the M4 GT3's visual identity. Spark's 1:43 range is the recognised standard for completist DTM grid collections, and this model of the #56 Holzem car documents a programme that existed for a single season only. The livery detailing reflects Project 1 Motorsport's 2023 DTM appearance.
Placing the #56 in Your Collection
This model pairs naturally with other Spark 1:43 entries from the 2023 DTM season — the #98 ROWE Racing BMW M4 GT3 of Sheldon van der Linde and the #32 Walkenhorst Motorsport entry are immediate companions for a full BMW grid row. Collectors building a Project 1 Motorsport shelf will find it complements the team's Porsche 911 GT3 R Le Mans entries from the same period, making it a genuine crossover piece bridging two distinct chapters of the team's history. For those tracking Sandro Holzem's career through ADAC GT Masters and NLS into the DTM, this is the definitive model record of his 2023 season.
Frequently asked questions
What is the BMW M4 GT3, and how does it relate to the road car?
The BMW M4 GT3 is a customer racing car developed by BMW M Motorsport with Dallara, based on the G82 M4 road car. It uses the S58 3.0-litre inline-six biturbo engine paired with a sequential 6-speed Xtrac gearbox and replaced the M6 GT3 in top-level GT3 competition from 2022.
Who is Sandro Holzem and what was his role in the 2023 DTM?
Sandro Holzem drove the #56 BMW M4 GT3 for Project 1 Motorsport throughout the 2023 DTM season. He is a noted gentleman driver with a background in German club and GT racing series including ADAC GT Masters and NLS.
Why is the Project 1 Motorsport BMW entry significant?
Project 1 Motorsport is best known for Porsche programmes, including Le Mans campaigns. Their 2023 DTM programme with BMW M4 GT3 cars was a rare crossover, making the #56 Holzem entry one of very few Project 1 and BMW combinations ever reproduced in model form.
What material is used for this Spark Model 1:43 replica?
Spark Model's 1:43 motorsport replicas are produced in resin, which allows precise reproduction of complex aerodynamic bodywork and accurate livery detailing at this scale.
