A 1991 Ayrton Senna Honda NSX goes under the hammer in London on 31 October. Chassis T000233 carries a notable estimate from RM Sotheby’s, reflecting the car’s direct link to the three time world champion. This is no replica wearing his name. Senna drove this car, and his feedback shaped it before it ever reached a showroom floor.
The NSX was one of three cars Honda allocated to Senna personally. It was based in Portugal for whenever his racing commitments brought him home. Finished in Formula Red with a black roof, it appeared in the 1992 documentary Racing Is in My Blood, a rare glimpse of Senna away from the cockpit. It remains one of the few pieces of film showing him behind the wheel of a road car rather than a grand prix machine.
For fans who know their Senna history, that is the real draw. This sale is not nostalgia alone. It is a car whose final shape came directly from the man himself, according to Honda’s own account.
Chassis T000233: The Provenance and Specifications Behind the Sale
According to the official auction listing from RM Sotheby’s, Honda Automobil de Portugal imported the car and registered it on 22 March 1991 under the plate ‘SX-25-59’. It was based in Lisbon and made available to Senna whenever he visited the country. It never travelled with him full time.
Under the bonnet sits a V6 engine producing 271bhp. Top speed reaches 165mph. Those numbers feel modest against today’s supercars, yet the NSX earned its reputation less for outright pace and more for the balance and feel it offered behind the wheel.
Senna died in 1994. The car stayed in Portugal for some years after that. Robert McKagan later bought it and brought it to the UK. A 2024 sale sent it to new owners in Japan, before it returned to the UK, where it goes under the hammer this month. That round trip, Lisbon to Britain, out to Japan and back again, is the kind of journey serious collector cars often take while chasing the right buyer.
Testing at Suzuka: How Senna’s Feedback Transformed the NSX
The detail that gives this car real weight came before any customer ever drove it. According to RM Sotheby’s auction listing, Senna tested the chassis at Suzuka Circuit during development. His verdict was blunt. He called it “a little fragile.”
Honda could not ignore feedback like that from a driver of his standing. The response was significant. “His precise feedback prompted Honda to stiffen the frame by 50 per cent and refine the suspension tuning,” according to the auction listing, a change that reshaped how the production car handled.
It is a detail that resonates with anyone who has followed comparisons to the legendary Brazilian driver over the years. Senna’s feel for a car’s behaviour under load, sharpened on grand prix circuits, found its way into a car ordinary buyers would eventually drive. Few production cars can claim that kind of input from a three-time world champion.
The Legacy and Market Value of F1 Engineering on the Road
The NSX itself was already a landmark for Honda. It remains one of the clearest examples of motorsport technology transfer to road cars. Lightweight aluminium construction and a mid-engine layout borrowed straight from the paddock, not the showroom. For Honda, the project mattered beyond one customer. It needed a flagship that could trade blows with established European supercar makers while staying true to everyday reliability.
What sets this Ayrton Senna Honda NSX apart is the documented link to Senna’s own hands. That history is what RM Sotheby’s leans on to justify its estimate. The listing points to the Suzuka testing and the Lisbon registration record as the backbone of its case.
As Motorsport.com’s report on the auction notes, cars with a verified connection to Senna rarely sit on the market for long. For collectors, the appeal goes beyond the badge. It is a direct line back to one of the sport’s most meticulous drivers, and the changes he demanded before he would put his name to it.
