2025 RML Group GTH

• Up to 920 hp from a retuned twin-turbo flat-six, with selectable drive modes ranging from 600 to 920 hp.

• Strictly limited to 39 cars, including 10 40th Anniversary Special Editions with additional track-focused upgrades.

• Priced from £495,000 (before VAT and donor car), the GTH has already sold out ahead of its production run.

Motorsport DNA on Display

The GTH is more than another boutique hypercar — it’s RML Group’s way of celebrating four decades of motorsport engineering. Revealed at Salon Privé 2025, the car takes clear inspiration from endurance legends like the Porsche GT1, blending track know-how with road legality. For RML, a company best known for its race and engineering programmes, this isn’t a vanity project. It’s a culmination.

Only 39 examples will ever exist, each one individually specified with the company’s bespoke finishing process. Of those, 10 cars are reserved as 40th Anniversary editions, carrying special trim and performance tweaks that nod directly to RML’s racing heritage.

Performance: Brutal Numbers with Usable Range

At the heart of the GTH sits a twin-turbo flat-six engine, reworked with the help of Litchfield Motors. In its most aggressive Sport and Sport+ settings, it delivers 920 hp and 1,000 Nm of torque, putting it well into hypercar territory. Modes can be dialed down for real-world use: 600 hp in Wet and 750 hp in Normal, making the GTH as adjustable as it is powerful.

The chassis tells its own story. A carbon-fibre shell, wider track, and extended wheelbase form the core. Then there’s the aero: an extendable front splitter, and a rear wing with drag-reduction system. Together, they generate as much as 6,500 N of downforce at 150 mph — four times more than a stock Porsche 992 Turbo S, which forms the donor architecture. It’s the kind of figure more at home on a circuit than a public road.

Special Editions with a Distinctive Touch

Among the 39 cars, the 40th Anniversary SE models stand apart. These add Performance and Track Packs with adjustable ride height, a roll cage, and a rear-seat delete for weight savings. Visual details also distinguish them: bespoke paint, hand-finished carbon panels, and interiors designed down to the stitch.

One launch car wore Storm Purple paint with tinted carbon on the bonnet and roof, gold centre-lock wheels, and gold hand-painted badging. Inside, Crayon-coloured stitching and carbon inlays completed the theme. It’s an object lesson in how RML plans to tailor each GTH to its owner’s tastes.

A Price That Reflects Its Place

At £495,000 before VAT and the donor car, the GTH is undeniably in rarefied territory. But the price also reflects the engineering depth and low production run. Each car is hand-finished, each one tuned to customer requirements, and every detail is engineered with the same precision as RML’s championship-winning race cars.

Specification

• Engine: Retuned twin-turbo flat-six
• Output: 600 hp (Wet) / 750 hp (Normal) / 920 hp (Sport/Sport+)
• Torque: 1,000 Nm
• Body: Carbon-fibre shell, widened chassis, longer wheelbase
• Aerodynamics: Active front splitter, DRS rear wing, up to 6,500 N downforce at 150 mph
• Production: 39 units total, 10 Anniversary SEs
• Performance Packs (SE): Adjustable suspension, roll cage, rear-seat delete
• Price: From £495,000 before VAT and donor car

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