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2 sales tracked since 3 Jun 2026 · 0 for sale now
Every 1978 Bonneville T140 that's come off Autotrader since 3 Jun 2026, with its final asking price and how long it took to sell.
What each 1978 Bonneville T140 variant sold for (filled dots) and what the 0 for sale are asking (rings), with monthly medians drawn through them. Click a dot to open the bike.
Solid lines: median sold price per month (3+ sales). Dashed lines: median asking price of bikes currently for sale, by the month they were listed.
By month sold, all variants
How long sold bikes were listed
How many bikes were listed each day since tracking began
Listings added and sold each month
0 live listings from Autotrader
Nothing is listed for sale right now.
Sold and asking prices against mileage. Each dot is a bike; click one to open it.
What 1978 Triumph Bonneville T140 bikes sell for and how many are on Autotrader UK right now. Updated 1 Nov 2026.
There are 0 used 1978 Triumph Bonneville T140 bikes for sale on Autotrader UK as of 1 Nov 2026. Autotrender has recorded 2 sales of 1978 Triumph Bonneville T140 bikes so far.
Autotrender records every Triumph Bonneville T140 listing on Autotrader UK twice a day and groups them by registration year. A bike counts as sold when its advert is removed, and its sold price is the final asking price before it came off; days to sell run from the advert's listing date to its removal. Medians are used throughout, and figures are only stated once at least 5 sales have been recorded.
Recomputed after every Autotrader scan. Month-by-month trends across all years: Triumph Bonneville T140 market report · About Autotrender