The Goodwood Festival of Speed is upon us, which means plenty of cool new project cars are out on display, including the first ever modified INEOS Grenadier.

Milltek Sport has unveiled four modified demo cars for its stand at the 2023 Goodwood Festival of Speed. The headline build is the world’s first modified INEOS Grenadier, so let’s take a look at what they’ve done to it…

Modified INEOS Grenadier

It wouldn’t be a Milltek demo car without an uprated exhaust system, and this Grenadier doesn’t disappoint. Milltek has installed the concept version of its upcoming Grenadier-specific filter-back system, which incorporates stainless steel tubing and should give this 280hp V6 SUV’s soundtrack an extra bit of bark.

As well as the new pipes, Milltek Sport has hooked the Grenadier up with several visual modifications. These include Urban Automotive Rock Slider Side Steps, Black Rhino 17-inch alloy wheels, and an array of additional Lazer lights on the grille, hood, and roof.

Range Rover Autobiography

Joining the Grenadier, are three other cars. Continuing the luxury SUV theme, Milltek has brought along its Range Rover P530 4.4-litre V8 Autobiography. This Chelsea tractor outputs around 530hp and features a Milltek Sport OBF/GPF-back exhaust system with active ‘H’ center section.

However, Milltek aren’t just exhaust specialists these days. This ‘Rover also comes packing the company’s Active Suspension Control System, which integrates with the OEM air suspension to allow drivers to alter the SUV’s ride height from their smartphone. The menacing look is completed by Urban Automotive body styling, 24-inch alloy wheels and side steps.

BMW M3 Touring

The BMW M3 Touring caused a bit of a stir amongst the motoring press when it launched – there’s nothing that gets automotive hacks drooling more than a fast wagon. Milltek’s own twist on the formula includes the addition of a cat-back exhaust with brushed titanium tips and Sport Active Valve Control System (essentially a valve that you can manually open or close with the push of a button inside the car, which will raise or lower the exhaust’s volume).

On top of that, it features adjustable MSS suspension, a RamAir carbon induction kit, two-piece EBC brake discs and RPX Motorsport pads all round. Aesthetics-wise, Milltek has added AUTOID carbon fibre body styling and Rotiform KPS Mono Block alloy wheels.

Auto Finesse GR Yaris

This Auto Finesse-built Toyota GR Yaris is a car that we’re already familiar with. However, things have certainly changed a bit since we last saw it. Its altered Pandem widebody kit remains, but there’s been some tinkering under the skin.

It now features a Milltek Sport GPF-back exhaust system with custom titanium tips, adjustable KW Clubsport suspension, DTE Systems tuning box and a HKS front-mount intercooler, amounting to over 300hp on the dyno.

If you’re at Goodwood this week, other new Milltek products you can enquire about include a brand new range of exhaust systems for the latest BMW M2, and Honda Civic Type R FL5.