1992 GM Ultralite Concept Could Achieve A Staggering 100 MPG: Live Photo Gallery

As the auto industry looks high and low to eke out every last drop of fuel returns, the GM Ultralite concept continues to provide a guiding light. Even though it was built nearly three decades in the past, the Ultralite was a fully functioning vehicle that could achieve upwards of 100 mpg thanks to clever design and innovative technology, all without sacrificing on passenger room, acceleration performance, or emissions.

Unsurprisingly, one of the GM Ultralite concept’s greatest strengths is how much it weighs. During the vehicle’s development, GM partnered with California-based aerospace company Scaled Composites to produce the Ultralite’s carbon fiber monocoque, resulting in a vehicle shell weighing just 420 pounds. The completed concept tips the scales at 1,400 pounds, and interestingly, the concept’s development resulted in a new patent for GM for low-cost carbon fiber production.

In addition to its feathery curb weight, the shape of the GM Ultralight is another key component to its efficiency. Thanks to a 0.19 drag coefficient, the concept can slice through the air without burning extra fuel to overcome air resistance. By comparison, the modern Chevrolet Corvette C8 has a drag coefficient of 0.32 when equipped with the downforce-generating (i.e. drag-heavy) Z51 Performance Package.

Although the GM Ultralite was designed for maximum functionality, the form was still a stunning thing to look at, and it continues to look modern and futuristic today. The curves are rounded and sleek, running together in a single shape with a long windshield, circular windows, and covered rear wheels.

Notably, the Ultralite was featured in the film Demolition Man, underlining its sci-fi appeal, and although GM never gave the green light for full-time production, the design did provide inspiration for the company’s first major effort in modern all-electric vehicles, the GM EV1.

Despite its ultra-high fuel returns, the GM Ultralite concept still managed to include space for four passengers inside the cabin, with ingress and egress made possible via a set of top-hinged gullwing doors. Motivation is sourced from a rear-mounted 1.5L three-cylinder two-stroke engine rated at 111 horsepower, enough to send the airy Ultralite to 60 mph in less than 8 seconds, with a top speed of 135 mph.

Now, the GM Ultralite can be seen on display at the recently reopened Petersen Automotive Museum in Los Angeles.

Subscribe to GM Authority for more General Motors news coverage.

1992 GM Ultralite Concept Photos
  • Sweepstakes Of The Month: Win a 2021 C8 Corvette Z51 Convertible. Details here.
Jonathan Lopez: Jonathan is an automotive journalist based out of Southern California. He loves anything and everything on four wheels.

View Comments (11)

    • Interior aside, still a better looking car than the bolt. 100mpg in a car is very easy if you slam it to the floor and scrape the ground with every pothole and throw on 4 doughnuts so its wheels are as slippery as a freight train. I would like to see someone create an economy car with active lift and lowering. Use the transmission pump and ATF to power pistons on top of mcfeaeson struts. Put it on the silverado and remove the awful airdam

      • I think 50 years ago they were called Citrons. They bought GM brand of Vauxhall and Opel.

  • It's a shame nothing ever comes of concepts likes this. I suppose the Aptera is a similar idea, sort of.

  • I like the humanized front facia with the indifferent expression! Yeah i remember this car from the movie but i was most impressed one safety feature of the car; in the crash scene that showcases a safety system of foam which fills the interior and hardens about the same time an airbag deploys and completely insulates passengers from the impact yet almost thirty year later we're nowhere near that.

    • That was fake effect for the movie, the Ultralite didn't have that in real life.

      I'd really rather just have seat belt than be encapsulated in foam......

  • I can’t believe that’s from 1992. It looks very futuristic and extremely current. As someone above stated, why don’t they bring some of these concepts to life. It’s a shame really.

  • This is 1000 lb lighter than a Mazda MX-5. It would be a lot of fun with a turbo 3, or the 1.6L TDI.
    It was too far ahead of its time. I'm still waiting for Lexan to replace the glazing and shed 200 lb of each car.

    I recall it cost $5M to make the Ultralite. It had early carbon fibre tech; multiple layers, pre preg, tapes. I'm sure they could bang out a carbon fibre SMC/bonded shell that's almost as light and strong, and make it $45G.