Tesla: Roadster's compressed-air tank refills itself, without a special propellant
Tesla says the Roadster's compressed-air tank refills on its own, but the company has not disclosed refill time or the number of takeoffs possible.
Tesla said the compressed-air tank in the new Roadster can refill itself without a special propellant. The announcement covers how the vehicle replenishes the air used by its thrusters, but Tesla did not disclose the refill time, the compressor output, or how many takeoffs are possible before the tank needs refilling, according to digitaltoday.co.kr.
The thrusters expel compressed gas rather than burning fuel, pushing the car forward or lifting and controlling its attitude in the air. Tesla said at a demonstration event that the flight configuration includes two pressure vessels totalling 600 liters and about 250 kg of compressed air. Company CEO Elon Musk said the Roadster can refill its tank itself without special propellant.
Three versions, two with thrusters
The Roadster is offered in three versions: Performance, Thrust and Rocket. All three have a suction fan that presses the body to the road surface; the fan operates independently from the thruster air tank and runs on battery power. Thrusters are only included in the higher models, and the base Performance version has none.
The limited Thrust version adds rear-facing booster thrusters for acceleration assist. The Rocket version, offered by invitation only, carries all ten thrusters needed for takeoff and in-air attitude control, and is a single-seater.
In October 2026, InsideEVs reported that the Roadster replenishes its tank by collecting and compressing surrounding air and storing it again.
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How does the Tesla Roadster refill its compressed-air tank?
Tesla said the tank can refill itself without a special propellant. In October 2026, InsideEVs reported that the vehicle collects and compresses surrounding air and stores it again.
How long does a refill take, and how many takeoffs are possible?
Tesla did not disclose the refill time, the compressor output, or the number of takeoffs possible before the tank needs refilling.
Which Roadster versions have thrusters?
Thrusters are only included in the higher models. The base Performance version has none, the limited Thrust version adds rear-facing booster thrusters for acceleration assist, and the invitation-only Rocket version carries all ten thrusters needed for takeoff and in-air attitude control.