Speed, Strength, and Safety: The Importance of Plastics in Formula One

Formula One represents the pinnacle of motorsport engineering, with advanced plastics playing a vital role in delivering the performance, safety, and efficiency demanded at the highest level of racing.

What Are Formula One Cars Made Of?

The structural components of a modern Formula One car - including the chassis, bodywork and aerodynamic surfaces - are made predominantly from carbon fibre reinforced polymer composites. Alongside these are a range of other advanced plastics and polymer-based materials, each chosen for specific properties such as impact resistance, heat protection or flexibility. Carbon fibres are essentially just carbon atoms bonded together in long chains – but when combined with other materials, they have incredible rigidity and strength, coupled with very low weight, making them the perfect material for Formula One cars. In fact, carbon fibre provides a similar level of strength to steel, while being around five times lighter (1).

Though carbon fibre is not itself a plastic, in order to have its strength and durability, carbon fibre has to be combined with another material to ‘provide the properties needed for a race car’ (2). And when we talk about carbon fibre in car-making, it's mostly carbon-fibre-reinforced-polymer (a composite made up of carbon fibres and some kind/combination of plastics) that is being referred to (3,2).

The discovery of using fibre-reinforced-composites was a huge breakthrough in the history of developing F1 racing cars. First appearing with the McLaren F1 Team in the 1980s, their lightweight and incredibly strong properties, combined with the ability the material brought to build newly shaped components, became key to a successful car (and thus a race win). Carbon fibre has now become so widespread in Formula 1 that it typically makes up 85% of a standard F1 car (4, 5).

What Other Materials Make Up Formula One Cars?

Aside from carbon fibre, most other materials in motorsport are made up of polymers (6) – most notably Zylon, aramids, and polyethylene filaments.

Zylon is one of the world’s strongest man-made fibres – in F1 Zylon applique armour is commonly used to connect the wheel to the chassis and keep the drivers safe by protecting the cockpit in the event of a crash (2,4). Even the infamous soft, hard, and medium tyres themselves are made up of 10% natural rubber, and 90% synthetic – including polybutadiene rubber – though the exact chemical composition is unknown as manufacturers safeguard their tyre formulas (7).

Anyone who watched Grosjean’s fiery crash during the 2020 Bahrain Grand Prix will know just how important it is that racing suits are lightweight and heat-resistant, and that’s where aromatic polymers come in. Aramids are mainly useful due to their heat-resistance, and are used for aerodynamic fittings like front wing end plates, and also in the construction of the drivers suits. Nomex, for instance, is meta-aramid material often used in the suits that can resist exposure to a direct flame for 15 seconds (8).

Much like the overalls, drivers helmets are typically made with several different types of plastics. The hard outer shell usually contains plastic fibres typically known as Kevlar®, with a shock-absorbing layer of polystyrene or polypropylene underneath to cushion the driver’s head, and the flame-resistant Nomex on the inside (9).

Polyethylene filaments, more often known as 'Dyneema' or 'Spectra', are high strength and low density, and so are weaved with carbon fibres to make highly resistant materials for use in impact structures, and are often seen in the drivers safety-belts (2,4).

Formula One as a Test Bed for Innovation

Formula One has long served as a proving ground for new materials and manufacturing techniques. The extreme demands of motorsport mean components must withstand high temperatures, immense forces, and constant vibration, all while keeping weight to an absolute minimum. Technologies developed for the track often go on to influence wider engineering applications, with lightweight composite materials now commonly found in high-performance road cars, aerospace, renewable energy, and medical equipment. While not every Formula One innovation makes its way into everyday products, the sport continues to demonstrate how advanced plastics and polymer composites can solve complex engineering challenges where performance, durability and safety are paramount.

Looking To The Future

Formula One has always been a showcase for engineering innovation, and the sport's (somewhat controversial) 2026 regulations are set to continue that tradition. Designed to improve efficiency, increase the contribution of electrical power and support the use of 100% sustainable fuels, the new rules will challenge engineers to rethink every aspect of vehicle design. Lightweight, high-performance polymer composites will remain fundamental to meeting these ambitious targets, enabling teams to balance speed, safety and efficiency at the highest level of motorsport. As materials continue to advance, Formula One will remain an important proving ground for technologies that may one day find applications far beyond the racetrack - whether we're tired of hearing the word 'boost' or not.

So, whether you're a Hamilton or Antonelli fan, it's fascinating to recognise the role that plastics play throughout a Formula One car - from tyres and front wing end plates to seatbelts, helmets, and the carbon-fibre composite chassis itself. Far from being a supporting material, advanced polymers are fundamental to the speed, precision, and safety that define modern Formula One - helping engineers continually push the boundaries of what's possible on the track.