Riley RM
The first post-war Riley, blending pre-war elegance with advanced torsion-bar suspension.
- Power
- 55 bhp
- 0–60 mph
- 31.2 s
- Top speed
- 75 mph
- Est. value
- $8k–$17k
About the Riley RM
Introduced in August 1945, the Riley RMA was the first of the celebrated RM series and one of the first new British cars to emerge after World War II. It utilised a modified version of the pre-war 12/4 'Big Four' engine, featuring twin camshafts mounted high in the block and hemispherical combustion chambers. The RMA is distinguished by its traditional ash-framed body, fabric-covered roof, and a dark blue radiator badge. It was technically advanced for its time, featuring independent front suspension with torsion bars and rack-and-pinion steering, providing road manners that were superior to many of its contemporaries.
Riley RM specs
The Riley RM produces 55 bhp (41 kW) and 105 Nm (77 lb-ft) of torque. It reaches 60 mph in 31.2 seconds and has a top speed of 75 mph (121 km/h).
| Make | Riley |
|---|---|
| Model | RM |
| Trim | RMA |
| Years | 1945–1952 |
| Type | Classic |
| Body style | Saloon |
| Country | United Kingdom |
| Production | About 10,504 built |
| Engine | 1.5-litre inline-four |
|---|---|
| Displacement | 1,496 cc (1.5 litres) |
| Induction | Naturally aspirated |
| Power | 55 bhp (41 kW) at 4,500 rpm |
| Torque | 105 Nm (77 lb-ft) |
| 0–60 mph | 31.2 s |
| Top speed | 75 mph (121 km/h) |
| Transmission | 4-speed manual |
| Drivetrain | Rear-wheel drive |
| Weight | 1,245 kg (2,745 lb) |
| Power-to-weight | 44 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Riley RM worth?
A typical Riley RM is estimated to be worth $7,700 – $17,000 (about £5,700 – £13,000).
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Riley RM rarity in CarSpot
The Riley RM is a Rare card in CarSpot, with a rarity score of 45 out of 100. Performance cars, typically worth around £50,000 to £100,000. A Rare card is worth 40 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Riley RM fun facts
- The RMA's roof is covered in a leather-effect fabric because the large steel presses required for a full metal roof were unavailable in post-war Britain.
- Early RMA models featured a split opening windscreen, a charming pre-war carryover that was phased out in later production years.
- The Riley RM series was the last to be developed by Riley as an independent company before it was fully absorbed into the Nuffield Organisation and later BMC.