XKSS

A D-Type for the road

Jaguar converted unsold D-Types into a road car without taking out the competition hardware. Sixteen were completed before the Browns Lane fire stopped the run; the nine factory continuations came six decades later.

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Market value · road

$12M–$16M

Typical $14M · 4 sales

$192K$17M
Open Market & Price

Market value · road

$12M–$16M

Typical $14M · 4 sales

$192K$17M
’05’25
Market history · in the terminal
Open Market & Price
Top speed
230 km/h (143 mph · Jaguar's 1957 figure)
Power
262 hp (Jaguar figure; auction catalogues list 250 bhp)
Engine
3'442 cc (DOHC straight-six · triple Weber)
Transmission
4-speed (manual)
Brakes
Four-wheel discs (Dunlop · Plessey pump)
Production
16 (original 1957 cars · 25 planned)

Market & Price

The price and the proof

A terminal for one car: the model curve over the documented record, the benchmarks it is measured against, and the instruments that read it.

Records: XKSS 707 · original car — $13,205,000 · RM Sotheby's Monterey · 19 Aug 2023; 5 documented road sales on file · 2005–2025. estimate band $12M–$16M · good road cars.

HCN:XKSSLive model
$13'856'4061571.3% · 12M
$200K$500K$1M$2M$5M$10M$20M20182020202220242026CovidRate shockS&P 500
Model curve · anchored to 5 documented salesnot investment advice
The readouts · model figures against the benchmarks5 documented anchors · last sale 17 mo ago

Compound annual growth

WindowThis car*S&P 500Gold
1Y+1571.3%+18.8%+21.9%
5Y+80.6%+11.4%+17.6%
10Y+46.7%+13.3%+11.8%

*Modeled price CAGR · S&P is a price index, no dividends

Deepest drawdown · model window

This car*-97.9%Aug 2023 → Feb 2025 · recovered Jul 2026
S&P 500-50.8%Oct 2007 → Mar 2009 · recovered Mar 2013
Gold-39.3%Sep 2011 → Dec 2015 · recovered Jul 2020

Forecast ladder · model quantiles

HorizonP10P50P90
+6M$12M$14M$17M
+12M$11M$15M$20M
+24M$11M$16M$24M

Median path with the 10th and 90th percentile · not investment advice

Transaction ledger · documented sales

5 of 5 recorded sales · shown in USD · recorded currency in each record

Two verified original-car sales define this ledger: XKSS 704 in 2005 and XKSS 707 in 2023. It says nothing about intervening private trades.

Price range · road · openConfidence · lowThe band is anchored by the $13'205'000 public sale of XKSS 707 in 2023 and Gooding's $13'000'000 to $16'000'000 estimate for unsold XKSS 716 in 2017. Original cars trade too rarely for high confidence, and individual chassis history can overwhelm a model-level range.

Floor

$12M

Typical

$14M

Ceiling

$16M

Estimate band for good road cars. 4 documented sales since 2019 plotted below.

$188K$12M$14M$16M$17M
Hover the spectrum to read a value, or a dot for the sale behind it.

Band and axis shown in USD. Sale positions use indicative fixed-rate conversion to USD; sale readouts retain recorded currencies. Original 1957 cars only. Jaguar Classic continuations, later factory conversions and replicas sit outside the band.

Road record

$13,205,000

XKSS 707 · original car

RM Sotheby's Monterey · 19 Aug 2023

The wider market · Jaguar at auction · median per year · modeled between anchors1,681 lots · 2003–2026 · exact yearly anchors · modeled line
20032026Explore all 40,882 results

Instrument calibration for this file is in progress — the terminal above reads the documented record directly.

Prices are nominal USD results including buyer's premium. No currency conversion has been applied.

Overview

A road car made from redundant racers

Jaguar withdrew its works team from international racing for 1957 with D-Type chassis still at Browns Lane. On 14 January, Sir William Lyons approved a plan to convert 25 into road-going cars aimed chiefly at North America.

The work was direct. Jaguar fitted a full-width windscreen, a passenger door, side screens, bumpers and a folding hood. It removed the D-Type's cockpit divider and stabilising fin; the monocoque, live rear axle, disc brakes and competition-derived straight-six remained.

The factory fire of 12 February 1957 destroyed nine unfinished cars. Jaguar counts 16 original XKSS roadsters; auction records also distinguish two customer D-Types later converted by the factory while retaining their XKD identities. Jaguar Classic began a separate run of nine continuation cars in 2017 to use the lost chassis numbers.

Built
16 originals
Basis
Jaguar D-Type
Programme approved
14 January 1957
Body
Magnesium alloy
Primary market
North America
Continuations
9 new cars

Reference

Technical specifications

Powertrain

Engine
3'442 cc DOHC inline-sixD-Type unit; naturally aspirated
Induction
Three Weber 45 DCO3 carburettors
Power
262 hpJaguar Classic period-specification figure; Gooding catalogues list 250 bhp
Gearbox
4-speed manual
Drive
Rear-wheel drive

Structure and running gear

Structure
Central monocoque with tubular front frameD-Type architecture
Body
Magnesium alloyJaguar's stated 1957 construction
Front suspension
Independent double wishbonestorsion bars and tubular dampers
Rear suspension
Live axletrailing links and transverse torsion bar
Brakes
Four-wheel Dunlop discsPlessey pump

Road conversion and identity

Windscreen
Full-width chromed framewith wipers and side screens
Body changes
Passenger door; tail fin removedcockpit divider also removed
Road equipment
Bumperettes and folding hood
Original production
16 XKSS roadstersJaguar's headline count; Gooding records two further customer D-Types later factory-converted
Continuation production
9 new carsbuilt by Jaguar Classic from 2017; distinct from the 1957 originals

HICON BID

Buying interest, silently.

A HICON Bid is a confidential expression of buying interest on the Jaguar XKSS file — never public, never shown to other members. It is not a binding purchase, and HICONIUM holds no funds.

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HICON Bids are a member instrument. Sign in to place one.

The vault

Open a file on yours.

You keep one? The record starts in your garage — identity, papers, photography, and the market evidence this file already carries, bound to your chassis.

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The variants

One badge, 2 executions

The register separates the XKSS into its documented executions. One reference silhouette per execution — each opens as its own file as the archive fills.

Jaguar XKSS Original — reference silhouetteOriginal01
Reference in preparationContinuation02

2 executions on file · references drawn to the house standard

The cars

The XKSS register

Documented individual cars — chassis, colour, ownership and sale history. Open one for its full provenance. Public records only; members see the complete registry.

04 documented · public records

The hands

The people behind the car

The people whose work shaped the Jaguar XKSS.

No free period portrait on record

Sir William Lyons

Programme decision

Approved the conversion of 25 remaining D-Types into road-going XKSS cars on 14 January 1957.

Malcolm Sayer

D-Type body and aerodynamics

Designed the D-Type body that the XKSS retained, using aerodynamic calculation and wind-tunnel work rather than conventional styling practice.

William Heynes

D-Type structural engineering

Jaguar's chief engineer; the Heritage Trust attributes the D-Type structure beneath the XKSS to Heynes and chassis engineer Tom Jones.