American rally driver, Gymkhana creator, founded Hoonigan and co-founded DC Shoes. Drove the Hoonitron in Elektrikhana (2022). Died Jan 2023 aged 55.

LEGO® Speed Champions · Audi · 2024

Audi S1 e-tron quattro Race Car

Q: Is LEGO® set 76921 still available?

Still listed in current catalogue as of April 2026; 2024 sets are approaching end-of-life. Confirm availability on LEGO.com and Brickset before buying.

Q: Is this the Audi Dakar car?

No — 76921 is the one-off Hoonitron stunt car, not Audi's Dakar-winning RS Q e-tron.

Q: How big is the LEGO® Audi S1 e-tron quattro Race Car when built?

Approximately 17 × 7 × 5 cm — compact even by 8-stud standards.

Q: How many pieces does LEGO® set 76921 have?

274 pieces plus one Audi race driver minifig.

Q: Is this a 6-stud or 8-stud LEGO® Speed Champions set?

8-stud — the current LEGO® Speed Champions scale.

Q: How much horsepower does the real Hoonitron make?

Audi quotes 500 kW (~680 hp) continuous; some outlets cite higher peak figures.

Ken Block's electric Pikes Peak tribute, rendered as 274 pieces of 8-stud LEGO® Speed Champions.

Set #76921 2024 274 pieces 8-stud Current

In 2022, Audi built a single car — silent, electric, carbon-fibre — and handed the keys to Ken Block. The S1 e-tron quattro Hoonitron was a love letter to the Group B Audi Sport Quattro S1 that Walter Röhrl had flung up Pikes Peak almost forty years earlier. Two years later, the LEGO® Speed Champions design team turned the Hoonitron into a 274-piece desk-size tribute — and by then, the car had taken on a meaning nobody saw coming. Set 76921 is one of the more unusual entries in the LEGO® Speed Champions catalogue: not a road car, not a race car, not a concept. A one-off stunt car that became a cultural marker — first for what it said about electric motorsport, and then, after January 2023, for the man who drove it.

LEGO® Speed Champions set 76921 Audi S1 e-tron quattro Race Car, front three-quarter on white background. — Source: Rebrickable

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One car, one driver, one tribute. Here's the Hoonitron's story — the 1985 ancestor that defined its silhouette, and the 2022 reimagining that gave it form.

THE ONE-OFF STUNT CAR

Audi S1 e-tron quattro Hoonitron

Audi's six-month electric tribute to its Group B rally heritage, built for Ken Block's Elektrikhana stunt film.

Before the Hoonitron, there was the Audi Sport Quattro S1 E2 — one of the most feared cars of the Group B rally era. A short-wheelbase, turbocharged, 600-horsepower all-wheel-drive missile with aero add-ons that looked almost cartoonish. When Group B was banned at the end of 1986, Audi repurposed the S1 for hillclimbs, and in 1987 Walter Röhrl took it to Pikes Peak — the 20-kilometre, 156-corner road up a Colorado mountain — and drove to the summit in 10 minutes and 47.85 seconds, the first competitor ever to go up the hill in under 11 minutes. That run is the car the Hoonitron exists to honour.

In late 2021 Audi asked its design studio to build a one-off electric tribute for Ken Block's upcoming Elektrikhana stunt film. Six months later, the Hoonitron was unveiled at the Los Angeles Auto Show — an all-electric homage to the 1985 S1, with two motor-generator units (one per axle) producing a combined 500 kW (around 680 hp), a carbon-fibre chassis, a 57.6 kWh battery running at 800 volts, and full FIA-grade safety cells. Some enthusiast outlets quote peak output figures as high as 1,400 hp off the spec sheet — the launch-day Audi release gives 500 kW as the continuous number. Either way, it's a lot for a car that weighs what this car weighs.

Ken Block filmed Elektrikhana in Las Vegas in 2022 — a closed-strip stunt film in which the Hoonitron drifted, smoked and spun through a deserted Vegas boulevard. The video became one of the most-watched automotive releases of the year. The Hoonitron is a unicorn — there's exactly one of them. It exists for a specific film, a specific driver, and a specific tribute. But it also answered a question the car world had been quietly asking: can an electric car be theatre? The Hoonitron said yes.

Powertrain: Twin motor-generator units, one per axle
Power: 500 kW (~680 hp) continuous; reported peaks much higher
Battery: 57.6 kWh, 800-volt architecture
Chassis: Carbon-fibre, FIA-grade safety cells

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People

The Hoonitron is a one-off, so there's no list of owners. But three people define what the car means — and if you came to this page for the LEGO® set, any one of them is worth following down the rabbit hole.

Ken Block (1967–2023)

DRIVER · GYMKHANA CREATOR · CO-FOUNDER, DC SHOES & HOONIGAN

Ken Block was the reason Audi built this car. An American rally driver who co-founded the skate-and-snow brand DC Shoes, he then invented the Gymkhana format in 2008: elaborate, one-take videos in which he drifted a highly-modified rally car through carefully-choreographed urban sets. The series racked up billions of views across YouTube and made motorsport entertaining for a generation that had largely stopped watching it. He built a media company — Hoonigan — around the format, and in 2021 signed a partnership with Audi that produced the Hoonitron and Elektrikhana. On 2 January 2023, Ken Block died in a snowmobile accident near his home in Woodland, Utah, at age 55. He was survived by his wife Lucy and three children. The LEGO® Group released set 76921 the following year. For anyone who didn't know his work before picking up this set, the Gymkhana back catalogue and Elektrikhana itself are still on YouTube, and worth an afternoon.

Walter Röhrl

PIKES PEAK 1987 · 2× WORLD RALLY CHAMPION (1980, 1982)

Walter Röhrl is the grandfather of this car. A two-time World Rally Champion, he drove for Audi in the final Group B years and then took the Sport Quattro S1 E2 up Pikes Peak in 1987 — 10 minutes and 47.85 seconds, the first sub-11 time the mountain had seen. Every boxy angle of the Hoonitron — the stacked rear wing, the flat airdam, the blocky fenders — is a direct visual quotation of the car Röhrl drove that day. If rally doesn't mean much to you yet, his Pikes Peak onboard is the place to start.

The Audi Sport design team

INGOLSTADT · SIX-MONTH BUILD

Six months. That's how long Audi Sport had to design and build the Hoonitron once the project was greenlit in mid-2021. The compressed timeline shows up everywhere on the car — the proportions are deliberately simplified, the cockpit is minimalist, and the electronics borrow wholesale from the RS Q e-tron Dakar programme Audi was running in parallel. It's an engineering-in-a-hurry story that somehow still ended up looking tailored.

The build

Scale and era

76921 is an 8-stud set, released in 2024 as part of the current LEGO® Speed Champions scale. It's wider and more detailed than the original 6-stud era (the Ferrari F40 Competizione 75890, LaFerrari 75899), and tighter than the big dual-vehicle boxes of the same year. One car, one driver, clean and focused — the Speed Champions team using the current scale at its most restrained.

Build highlights

The boxy rear wing — the Hoonitron's most recognisable silhouette cue — is rendered in black with angled brackets that mimic the 1985 S1 E2's over-the-top aero. A removable roof exposes the simplified cockpit, with a single steering wheel and a moulded driver seat. Front splitter and rear diffuser translate into sloped bricks, keeping the Group B visual reference intact. The minifig wears a black race helmet and grey overalls with Audi Sport branding around the collar and on the back of the torso. Red, black and white body colours pull from Audi's motorsport livery tradition.

What the 274 pieces buys you

274 pieces sits squarely mid-range for an 8-stud single-car box. There are no play features — no pull-back motor, no flick-fire — but there's a removable roof and a full cockpit, which is where this set stands apart from the 6-stud era. Assembly takes a comfortable 45–60 minutes for an adult builder.

FAQ

Is LEGO® set 76921 still available?

As of April 2026 the Audi S1 e-tron quattro Race Car is still listed in the current LEGO® Speed Champions catalogue, though 2024 sets are now approaching end-of-life. Confirm on LEGO.com and Brickset before buying.

Is this the Audi Dakar car?

No — this is the most common confusion about this set. 76921 represents the Audi S1 e-tron quattro Hoonitron, the one-off electric stunt car Audi built for Ken Block's Elektrikhana film in 2022. Audi's Dakar-winning car is a different vehicle — the RS Q e-tron, which Carlos Sainz drove to overall victory at the 2024 Dakar Rally.

How big is the LEGO® Audi S1 e-tron quattro Race Car when built?

Approximately 17 × 7 × 5 cm (roughly 6.5 × 2.8 × 2 inches). Compact even by 8-stud standards — a single universal stand suits it well.

How many pieces does LEGO® set 76921 have?

274 pieces, plus one Audi race driver minifig with a black helmet and grey Audi Sport overalls. Confirmed on Rebrickable.

Is this a 6-stud or 8-stud LEGO® Speed Champions set?

8-stud — the current LEGO® Speed Champions scale that replaced the original 6-stud format in 2020.

Who was Ken Block?

Ken Block (1967–2023) was an American rally driver, co-founder of DC Shoes, founder of Hoonigan, and creator of the Gymkhana film series — elaborate stunt videos that made him one of the most influential automotive personalities of the 2010s. Audi built the Hoonitron as the hero car for his Elektrikhana film in 2022. He died in a snowmobile accident on 2 January 2023, aged 55, survived by his wife Lucy and three children.

How much horsepower does the real Hoonitron make?

Audi's official release lists the car at 500 kW (around 680 hp) from two motor-generator units, one per axle. Some enthusiast outlets quote peak output figures as high as 1,400 hp. Either way, it's a substantial output for a short-wheelbase electric stunt car.