Bentley S1
The Bentley S1 was the last of the inline-6 models, offering classic 1950s British luxury in a package that's more understated than its Rolls-Royce sibling. It's an accessible entry point for collectors seeking a hand-built, post-war saloon.
Bentley S1 sold for a median of $23,301 over the last 12 months, based on 7 auction sales; the middle 50% sold between $20,331 and $37,650. 35 currently for sale.
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Bentley S1 prices by year
| Year | Median (3 yrs) | Middle 50% | Sales (3 yrs) | For sale now |
|---|---|---|---|---|
| 1955 | $17k | – | 1 | 0 |
| 1956 | $23k | $17k–$103k | 13 | 8 |
| 1957 | $73k | $45k–$190k | 4 | 8 |
| 1958 | $25k | $25k–$26k | 4 | 12 |
| 1959 | $50k | – | 3 | 6 |
Auction sales in the last 3 years; prices leave out salvage and other branded titles.
Listings
The Bentley S1 debuted in 1955, replacing the R-Type and sharing its new standard steel saloon body with the Rolls-Royce Silver Cloud. It was a significant step forward, powered by a larger 4.9L inline-6 engine mated to a standard 4-speed automatic transmission. The S1 retained the traditional separate chassis construction, making it the last Bentley to feature both this design and an inline-6 engine before the brand moved to V8s and unibody construction.
Collectors appreciate the S1 for its elegant, flowing lines and its status as an 'end-of-an-era' motorcar. It offers a more understated presence than its Rolls-Royce counterpart while delivering a similar level of luxury and comfort. Because it shares mechanicals with the more numerous Silver Cloud, parts availability is better than for many other cars of its vintage.
Buying Tips
- Check for rust extensively, particularly in the sills, wheel arches, boot floor, and chassis outriggers. Body repairs are expensive.
- The 4.9L inline-6 is durable, but look for signs of a worn engine like blue smoke on startup or low oil pressure when warm.
- The GM-sourced 4-speed automatic transmission should shift smoothly. Jerky changes or slipping can indicate a costly rebuild is needed.
- Test the servo-assisted drum brakes. A soft or unresponsive pedal can point to problems with the complex hydraulic system.
- Inspect the wood veneer and leather interior carefully. Restoring tired trim and upholstery to a high standard is a major expense.
305 Bentley S1 vehicles have been tracked across auctions and listings on Hypercars, with 35 currently live.
Data sourced from auction results and dealer and private listings, including Bring a Trailer, Cars & Bids, Mecum, RM Sotheby’s and eBay Motors. Updated daily.
Frequently Asked Questions
How much does a Bentley S1 cost?
Over the last 12 months, Bentley S1 sold for a median of $23,301 across 7 auction sales tracked on Hypercars; the middle 50% sold between $20,331 and $37,650. There are 35 currently for sale.
How many Bentley S1 listings are for sale right now?
There are 35 Bentley S1 listings currently live across auctions, dealers, and marketplaces tracked by Hypercars.