9 three-wheeled vehicles you could actually drive on the road

Three wheels instead of four has never stopped a vehicle from reaching production, and the results range from wobbly economy cars to purpose-built sports machines. Some were built to dodge tax and licensing rules that favored motorcycles, while others simply chased a lighter, cheaper way to move people or cargo. Here are nine three-wheeled vehicles that made it onto public roads.

1. Reliant Robin: The Wobbly Icon

The Reliant Robin used a fiberglass body over a steel chassis to keep weight down, letting UK drivers with only a motorcycle license operate it under Britain’s tax and licensing rules for three-wheelers. Reliant built the car in several generations from 1973 into the 2000s, and its narrow rear track made it prone to tipping in hard corners, a trait later exaggerated for laughs by Mr. Bean and Top Gear.

That reputation turned a budget car into a pop-culture fixture rather than a punchline that killed sales. Decades after production ended, the Robin remains the three-wheeler most people picture first.

2. Reliant Regal: Del Boy’s Ride

The Reliant Regal preceded the Robin as Reliant’s main three-wheeler, built from 1952 to 1973 with an aluminum and later fiberglass body on a light steel frame. It became internationally recognizable as the yellow three-wheeled van driven by Del Boy Trotter on the British sitcom Only Fools and Horses, cementing the model in popular memory long after the last one left the factory.

Like its successor, the Regal exploited UK rules that classed three-wheelers under 8 hundredweight as motorcycles for tax and licensing purposes. That loophole, more than any performance advantage, explains why so many small British three-wheelers exist at all.

3. Morgan 3 Wheeler: A Pre-War Revival

Morgan revived its own cyclecar heritage in 2011 with the 3 Wheeler, mounting a V-twin engine out front, ahead of the axle line, and driving the single rear wheel with a belt. The layout echoed Morgan’s original three-wheelers from before the First World War, and the open cockpit, exposed engine, and minimal bodywork gave the car a period look built on a modern tubular chassis.

Morgan built the 3 Wheeler through 2021, selling it as a lightweight, low-cost way into serious performance rather than a budget compromise. Its low weight kept power modest by sports-car standards while still delivering brisk, exposed-air acceleration.

4. Polaris Slingshot: An Open-Air Roadster

Polaris launched the Slingshot in 2015 as a three-wheeled autocycle, pairing two front wheels with a single driven rear wheel and no roof, doors, or roll cage covering the occupants. Because it has no enclosed cabin, most US states register and license it like a motorcycle rather than a car, even though the layout, steering wheel, and side-by-side seating feel closer to a sports car.

The open cockpit and low center of gravity make the Slingshot feel more like a track toy than daily transportation. Riders still need a motorcycle endorsement or a helmet in many states, a reminder that its legal classification stayed tied to its wheel count.

5. Messerschmitt KR200: Built By An Aircraft Maker

Messerschmitt, barred from building aircraft after World War Two, turned to the Kabinenroller, a narrow bubble-canopy three-wheeler with tandem seating for a driver and one passenger behind. The KR200 used a small two-stroke motorcycle engine and a fighter-style hinged canopy that lifted for entry, a shape that drew directly on the company’s aeronautical background rather than conventional automotive design.

Production ran from 1955 to 1964, and the narrow body let it squeeze through gaps a normal car could not. It remains one of the most recognizable postwar microcars precisely because it looked like nothing else on the road.

6. Isetta: The Bubble With A Front Door

The Isetta opened not from the side but from the front, where the entire front panel, including the steering column, swung outward to let the driver step in. Designed in Italy by Iso, the microcar was built under license by manufacturers across Europe, and BMW’s version became the most successful, helping keep the automaker financially afloat during the lean years of the mid-1950s.

A single-cylinder motorcycle engine powered most versions, and the egg-shaped body made parking in tight European city streets simple. Its unusual door remains the detail most people remember decades after the last one rolled off a line.

7. Bond Bug: A Wedge For Young Drivers

The Bond Bug paired a bright orange wedge-shaped fiberglass body with a tandem two-seat cabin sealed under a hinged canopy, aiming squarely at young drivers who wanted something sportier than a standard economy car. Built by Bond and later Reliant from 1970 to 1974, it sat low, leaned into corners like a go-kart, and used the same three-wheel tax and licensing advantages as its Reliant siblings.

Despite its sporty looks, the Bug used a modest engine shared with other small Reliant models, so its performance never matched its styling. Fewer than 3 thousand were built, which keeps surviving examples rare and sought after today.

8. Peel P50: The Smallest Production Car

Built on the Isle of Man in the early 1960s, the Peel P50 holds the Guinness World Record for smallest production car ever made, measuring barely over 4 feet long and just under 3 feet wide, with room for one adult and a small bag on the passenger’s seat instead of a second seat. A single-cylinder moped engine drove the single rear wheel through a chain.

The P50 had no reverse gear, so a fold-out handle on the back let the driver simply lift and turn it around in tight spots. Peel built fewer than 50 examples originally, and a modern revival later put updated versions back on sale.

9. Piaggio Ape: A Worldwide Workhorse

Piaggio, the Italian company behind the Vespa scooter, adapted its own two-wheeled mechanicals into the Ape in 1948, giving it a single steered front wheel and two rear wheels carrying a small cargo bed or cab. The layout let it thread through the same narrow streets Vespas were built for, and the name, Italian for “bee,” nodded to its buzzing engine note and small, busy shape.

Decades later, the Ape still works as a delivery vehicle, mobile shop, and taxi across Italy, Asia, and other markets where its tight turning radius and low cost outweigh the limits of a small engine. Newer electric versions now extend the same basic formula into city centers with emissions rules.