RELIANT · RELIANT 21 E · Cars
RELIANT 21 E Ultra-rare
As of 2025 Q4, 27 RELIANT 21 Es remain registered in the UK — one of the rarest cars in Britain on today's roads. Numbers are at their highest recorded level since the model first appeared in our data in 2014 Q3. Unusually, the numbers are actually rising — up 3 (12.5%) over the past year, as imports and barn-finds rejoin the register faster than cars leave it. In all, the RELIANT 21 E is rarer than 71% of the 2,408 UK car models we track, putting it firmly in 2025's endangered class.
Survivors over time
How rare is it?
Genuinely rare — only 27 left on UK roads.
Rarer than 71% of the 2,408 UK car models we track.
Trend
About the 21 E
The Reliant Robin is a small three-wheeled car produced by the Reliant Motor Company in Tamworth, England. It was offered in several versions (Mk1, Mk2 and Mk3) over a period of 30 years. It is the second-most popular fibreglass car in history after the Chevrolet Corvette, with Reliant being the second-biggest British car manufacturer for a time.
RELIANT 21 E — questions & answers
How many RELIANT 21 E are left in the UK?
As of 2025 Q4, 27 RELIANT 21 E were still registered in the UK — 7 licensed and on the road, plus 20 declared SORN (off-road). The figures come from official DVLA vehicle licensing data.
Is the RELIANT 21 E rare?
The RELIANT 21 E is genuinely rare, with only 27 left, making it rarer than 71% of the 2,408 UK car models we track.
Is the RELIANT 21 E increasing or decreasing?
Over the last year the number of RELIANT 21 E on UK roads rose by 3 (12.5%).
What fuel do most RELIANT 21 E use?
Most RELIANT 21 E run on petrol — about 100% of those still registered.
When did the RELIANT 21 E peak?
The RELIANT 21 E peaked at 27 registered in 2025 Q4, and was first recorded in the data in 2014 Q3.