Generation
TRIUMPH MODEL MISSING (1923–1927)
The TRIUMPH MODEL MISSING was produced from 1923 to 1927. MotorDox lists 1 trim for this generation. The TRIUMPH MODEL MISSING was produced from 1923 to 1927. The catalogue lists 1 trim. Published specification figures are not available for these trims yet. Open a trim for the full specification.
Last updated 4 November 2026. Source: Estimated based on historical 1923 Triumph 10/20 specifications. Unpublished figures are shown as Not available. Fuel economy, CO₂, engine size, fuel, transmission, Euro standard and noise can come from the Vehicle Certification Agency car fuel data, which data.gov.uk lists as Creative Commons Attribution. See the spec glossary. Report a correction.