Highlights
- 23,579 miles reportedly warranted
- Extensive service performed following acquisition in September 2024
- Dry-stored during recent years
- Extensive history file including heritage certificate, 'Buff' logbook and a significant collection of invoices
- Manual with overdrive
The Appeal
The seriously underrated 420 offered one of the finest expressions of Jaguar's 1960s saloon car philosophy: combining elegant styling, an opulent cabin and impressive performance from its silky-smooth DOHC XK straight-six. For those seeking a less obvious choice than an Mk2 or S-Type, these 420s are eminently worthy of your consideration, especially this remarkably original, low-mileage example from 1966.
This MOD 420 shows just 23,579 miles on the odometer, a figure the vendor says is supported by a lengthy period in storage prior to 2014. With its heritage certificate, 'Buff' logbook, and extensive expenditure records, this 420 offers the discerning Jaguar enthusiast a well-documented example that has clearly been cherished throughout its life.
This MOD 420 shows just 23,579 miles on the odometer, a figure the vendor says is supported by a lengthy period in storage prior to 2014. With its heritage certificate, 'Buff' logbook, and extensive expenditure records, this 420 offers the discerning Jaguar enthusiast a well-documented example that has clearly been cherished throughout its life.
The vendor summarises:
"Unrepeatable, low mileage 240 with lots of expenditure on file. Excellent driving mid-sixties' Jaguar saloon."
"Unrepeatable, low mileage 240 with lots of expenditure on file. Excellent driving mid-sixties' Jaguar saloon."

History and Paperwork
- First registered in 1966
- Acquired into the vendor's stock in September 2024
- Stored indoors by the current and previous owner (retired dealer)
- Period "Buff " logbook available
- Low mileage reportedly supported by a lengthy period in storage prior to 2014
- Extensive expenditure records on file
- Heritage certificate included

The Condition
- Presents very well for its age and looks to be highly original
- Some age-appropriate marks on chrome trim, as shown in the photographs
- Small area of paint was resprayed on one of the doors
- The vendor states that the dark blue leather interior remains soft, and it certainly presents well in the photographs
- Wooden trim presents in very good order
- Front seatbelts installed

The Mechanics
- 4.2-litre XK straight-six
- Four-speed manual gearbox with overdrive
- Reportedly running and driving very well
- Smart engine bay
Fully serviced since acquisition, including:
- Brakes
- Tyres
- Automatic choke
- Partial exhaust replacement
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