The G80 BMW M3 CS was produced for a single model year, from March 2023 to February 2024 at BMW Plant Munich, with a confirmed output of 1,727 automatic-transmission units worldwide. GT Spirit has rendered it in 1:18 scale in Signal Green — the colour BMW selected to introduce the car to the world — in a sealed resin construction that preserves the complex surface geometry without panel-gap compromise.
The S58 at Full Stretch: 550 PS in a Four-Door Shell
The M3 CS sits at the apex of the G80 generation, powered by the S58B30 3.0-litre twin-turbocharged inline-six with charge pressure raised from 1.7 to 2.1 bar, lifting output to 550 PS (405 kW) and 650 Nm — 40 PS clear of the standard Competition variants. Transmitted through an 8-speed M Steptronic gearbox and M xDrive all-wheel drive, that translates to a 0–100 km/h time of 3.4 seconds and an electronically limited top speed of 302 km/h. The body measures 4,795 mm long, 1,918 mm wide and 1,438 mm tall on a 2,857 mm wheelbase, riding on 275/35 ZR19 front and 285/30 ZR20 rear tyres.
The Rarest Colour on the Rarest Variant
BMW unveiled the M3 CS at Daytona International Speedway in January 2023 with Signal Green as the reveal colour, presided over by BMW M CEO Frank van Meel. Four exterior colours were offered: Sapphire Black, Frozen Solid White, Brooklyn Grey, and Signal Green — the last two classified as BMW Individual special-order paints requiring separate production scheduling. VIN-level data shows Signal Green accounted for just 262 of the 1,727 automatic units built, making it the least-ordered of the four options at 15.2% of production. Demand in the United States was disproportionately high: 108 of those 262 cars, or 41% of all Signal Green M3 CS sedans, were delivered to US buyers. The colour also dominated BMW's press and marketing imagery throughout the launch campaign, giving it an outsized visual identity relative to its production share.
GT Spirit's Resin Approach: Where the CS Carbon Reads Correctly
GT Spirit, the French resin specialist founded in 2010 and part of the Z Models group alongside OttOmobile, holds official BMW manufacturer licences and casts in silicone moulds that wear out after a limited run, structurally capping edition sizes. The M3 CS's CS-specific carbon-fibre bonnet with heat-extraction vents, carbon-fibre roof, and the kidney grille geometry shared with the M4 CSL are all elements that benefit from resin's ability to hold sharp surface transitions. The body is sealed — no opening parts — concentrating the fidelity entirely on exterior surfaces and the Signal Green Individual paintwork. A display base is included.
In the Cabinet: Dimensions and Collection Fit
At 26.5 cm in length, this model occupies meaningful shelf depth and pairs naturally with GT Spirit's G80 M3 CS in Brooklyn Grey, which shares the same mould. Within a broader BMW M saloon sequence, it sits alongside representations of the M5 CS (F90) and the M3 Competition xDrive (G80) to chart the CS lineage. Collectors building a Signal Green theme will also find it complementary to GT Spirit's BMW M5 Competition in Java Green. The model's single-production-year real-car context — March 2023 to February 2024 — gives it clear boundaries as a closed chapter in the G80 story.
Frequently asked questions
How big is the 1:18 scale model?
The real BMW M3 CS (G80) sedan measures 4,795 mm in length. Divided by 18, that gives a model length of approximately 26.5 cm. Allow at least 30 cm of clear shelf depth to display it comfortably alongside its included base.
Does the model have opening parts?
No. This is a sealed resin model with no opening doors, bonnet, or boot. GT Spirit's construction method concentrates all detail on the exterior surfaces — the carbon-fibre bonnet vents, kidney grille, and Signal Green Individual paintwork — without introducing panel gaps.
What material is the model made from, and who makes it?
The model is cast in resin with plastic parts and produced by GT Spirit, a French specialist founded in 2010 with official BMW licensing. Resin allows sharper surface detail than diecast, which is particularly relevant for the M3 CS's CFRP body panels and aero surfaces.
How rare was Signal Green on the real car?
Signal Green was the rarest of the four factory colours offered for the G80 M3 CS: only 262 of the 1,727 automatic sedans built were finished in it, representing 15.2% of total production. BMW chose it as the global reveal colour at Daytona in January 2023.
