Senna’s NSX Sold for £871,250. The Import Bond Is Still Open.

The result was £871,250, above the £800,000 top estimate, and at most auctions that would close the story. For Lot 155 at RM Sotheby’s London sale on 31 October, it does not. The 1991 Honda NSX that Ayrton Senna kept for personal use in Portugal crossed the block with a line in the addendum that matters almost as much as the Honda fax behind the price: the car has entered the United Kingdom on a temporary import bond.

That is the real story of this sale. Provenance set the price. Paperwork will settle the bill.

A Bond Is a Liability Held in Suspense

A temporary import bond defers duty and VAT; it does not forgive them. RM’s own wording is plain: the bond must be cancelled either by exporting the car on an approved Bill of Lading with customs documents, or by “paying the applicable VAT and import duties” to keep it in the country. (RM Sotheby’s lot page) The buyer of a headline Senna car therefore inherits a binary decision with a very large number attached to one side of it.

The car’s own history explains why the question exists. According to the lot essay, the NSX was brought to the UK in 2013 and registered for road use in May 2016. The consigning owner then acquired it in Nagoya, Japan, in 2024, and it has since returned to Britain for this sale. A car that has left and come back is, in customs terms, a new arrival, which appears to be why a bond is in play. We covered the earlier chapter of that journey when the car surfaced on the market in 2024: Ayrton Senna’s Prized Red Honda NSX Hits the Market for Half a Million.

What the Difference Could Be Worth

For scale only: 20 percent standard VAT on the published result would be £174,250. At the 5 percent reduced rate, which the UK Trade Tariff lists as an alternative for collectors’ pieces, the figure falls to roughly £43,560. The gap is about £130,700. Import VAT is assessed on customs value, which includes duty and freight, not on the sale price as such, so the real numbers will differ. But a six-figure swing belongs in a bidder’s budget before the paddle goes up, not after the invoice arrives.

The Test Is Originality, Not Fame

The relevant definition sits in the chapter note to heading 9705 of the UK Trade Tariff. A collectors’ motor vehicle must be in its original state, with repairs and restoration permitted but no substantial changes; at least 30 years old; and of a model no longer in production. A car meeting all three is presumed to qualify. Accountants who advise on classic imports describe the benefit as nil duty and 5 percent VAT.

A 1991 NSX is 35 years old and the first generation ended production in 2005, so age and model are not the issue. (Our first-generation NSX spec sheet sets out how that production run is divided.) Original state is the live question, and the published material does not answer it. RM’s lot page gives no mileage and no restoration history, and the essay is silent on mechanical condition. Nobody outside the buyer’s customs adviser and HMRC can say how this car would fare.

Two Kinds of Documentation

Here is the distinction collectors tend to blur. The Honda fax, reaffirmed by Honda Motor Europe, proves who the car was for. It is a provenance document, and it is the reason the estimate ran from £500,000 to £800,000 on a car that would otherwise trade as an ordinary early NSX. Customs asks a different question: what the car is, and whether it has been changed. Those answers live in service records, restoration invoices and a clean chain of identification, the same kind of evidence we described in On an Integra Type R, the VIN Trail Matters More Than the Plaque.

A fax from Honda cannot tell HMRC whether the paint, interior or running gear are original. A buyer who pays for the first kind of paper and assumes it covers the second has bought half a file.

The 2025 Title

The addendum also states that the car is titled as 2025. We do not know the cause, and it may be a purely administrative consequence of the car’s re-entry from Japan. But for a vehicle whose tax treatment can turn on being at least 30 years old, a record that dates it to 2025 is a discrepancy to resolve in writing, with the registering authority and with customs, before any declaration is made. It is the kind of detail that costs nothing to fix early and a great deal to explain later.

What Serious Buyers Should Take From It

The top of the collector market is now thoroughly international. Cars cross borders for auctions, for private sales and for the shelves of collectors who own in several countries, and each crossing adds a regulatory layer that belongs in the provenance file alongside the ownership chain. Exporting the NSX under bond is a legitimate route, but it only moves the same question to the destination country, whose own rules for a 35-year-old car may differ.

The sale told us what Senna’s name is worth to a room of well-funded bidders; our earlier analysis of the result and our pre-sale look at the estimate cover that ground, and the wider sale is in RM’s record £36.55 million London total. The bond asks a quieter and more consequential question: how much of what the buyer paid for can the buyer lawfully keep at the price they expected? Honda’s heritage parts program and the broader market for correct first-generation cars make an unaltered NSX easier to maintain than ever. Whether this particular one qualifies as unaltered is the sentence the file needs to finish.

This article is market commentary, not tax or legal advice. Buyers should take customs and tax advice specific to the car and the jurisdiction before cancelling or discharging a bond.