The auction took place at the Belfry Hotel, in Sutton Coldfield, late in May and a total of 400 cars were offered from BMW.
The cars were stored at BMW's distribution centre at Thorne, where they were pre-sale prepared and digitally imaged by BCA. The auction took place in a conference suite at the Belfry where BCA’s auctioneers and nearly 100 BMW dealers were gathered.
A total of 93 BMW dealers attended the sale and with 78 buying on the day.
Every car sold for a 100% conversion that generated £9.8 million.
Values averaged 102.6% of CAP Clean, equivalent to 73.3% of the original cost new.
Kevin Davidson, BMW general manager, used car operations & group internal sales, said: "This was the biggest single sale turnover ever achieved by BMW and BCA despite this event taking place at a time when there is much 'doom and gloom' in the used car market.
"The 100% conversion shows that BMW are 'bucking the trend' in a market where 60% conversion rates are currently the norm."