£34,500 (Est: £35,000 - £45,000)
1957 Austin Healey 100/6 BN4 Convertible
Bonhams • UK • 13 Sept 2025
Market Position:
Highest 30% of Past Sales
Track live values and receive listing alerts
Track live values and receive listing alerts
£34,500 (Est: £35,000 - £45,000)
1957 Austin Healey 100/6 BN4 Convertible
UK • 13 Sept 2025
Vehicle Details
AI Listing Summary
This 1957 Austin Healey 100/6 BN4 Convertible is a right-hand drive model that has been part of a private collection since 2016, with only approximately 2,000 miles covered in the last nine years. It features a two-tone Jet Black and Colorado Red finish with a black interior and comes with a tonneau cover, canvas roof, and an extensive history file.
Condition
8
The car is described as being in good/excellent condition by the vendor, who claims it's been maintained by Austin-Healey specialists. The listing mentions a well-maintained older restoration. While it's not in perfect condition, it's very well-maintained with minimal cosmetic imperfections.
/ 10
99,055 miles
XVS 770
1957
Auction
BN4-L-0/36589
RHD
United Kingdom
£34,500 (Est: £35,000 - £45,000)
1957 Austin Healey 100/6 BN4 Convertible
Bonhams • UK • 13 Sept 2025
Market Position:
Highest 30% of Past Sales
Track live values and receive listing alerts
Description
• First of the six-cylinder 'Big Healeys' • Converted to right-hand drive • Present ownership since 2016 • Only circa 2,000 miles covered in the last nine years "After a really gruelling road test, I can say that this new sports model is ideal for Continental touring.
It also stood up to lap after lap of the Nürburgring at racing speeds, without complaint, and that must be equivalent to a vast mileage under more humane conditions." – John Bolster on the Austin-Healey 100/6, Autosport , 12th October 1956.
Introduced for 1956, the 100/6 represented the most radical step forward in the Big Healey's development.
Despite its initial success, sales of the original Austin-Healey 100 had begun to decline by the mid-1950s and so the model was revamped as the '100/6', BMC's 2.6-litre C-series six replacing the original four-cylinder Austin Atlantic engine.
At the same time the wheelbase was lengthened from 7' 6" to 7' 8", which enabled the inclusion of two occasional seats in the rear of the...
Price Analysis vs Other 100/6 BN4s
£2,670
Lowest Price (Since 2020)
£26,495
Median Price (Since 2020)
£60,243
Highest Price (Since 2020)
World Record
If this vehicle sells at the mid-point of its estimate it will set a new world record for the [enter model]
Highest 30% of Past Sales
Compared to previous sales, the sale price placed this vehicle in the highest 30% of past sales for the 100/6 BN4.
Lowest Price
If this vehicle sells at the mid-point of its estimate it will be the lowest price we've seen for the [enter model]
Average Price
The mid-point of the vehicle's estimate places it near the average price we see for the [enter model]
Rare Sale
This vehicle comes to market rarely. In auction records we've only seen [enter number] sold before
Icon
This vehicle is an icon of the game. Any collection would benefit from having one
Previous 100/6 BN4 Sales
MOT Information
Expired
Expired on 11th Feb 2025
Latest MOT mileage:
98,138 miles
MOT History
Passed
On 12th Feb 2024, 98,138 miles
Failed
On 25th Jan 2024, 98,132 miles
There were 4 defects noted, with 2 deemed dangerous.
Major:
- Offside Front Service brake effort inadequate at a wheel (1.2.1 (a) (i))
- Front Windscreen washer not working (3.5 (a))
Passed
On 14th May 2019, 97,343 miles
Failed
On 13th Nov 2018, 97,297 miles
There were 4 defects noted.
Major:
- Front Windscreen washer provides insufficient washer liquid (3.5 (a))
Minor:
- Indicator switch insecure (4.4.2 (a) (i))
- Horn not working properly (7.7 (a) (i))
- Horn control insecure (7.7 (b))
MOT Mileage Trend
Gallery
People Also Viewed - Historic
Auction House Headquarters
Bonhams
101 New Bond Street, London, Greater London, W1S 1SR, England
Operating from London, Bonhams is a physical auction house handling classic, historic competition, and collector cars. They conduct live auctions globally, offering vehicle consignment, appraisal, and valuation services.
Insurance
