Jaguar 420
The ultimate evolution of Jaguar's compact sporting saloons, featuring the iconic S-Type rear suspension and Mark X styling.
- Power
- 245 bhp
- 0–60 mph
- 9.9 s
- Top speed
- 123 mph
- Est. value
- $14k–$45k
About the Jaguar 420
Introduced at the 1966 London Motor Show, the Jaguar 420 was developed as a more powerful and refined alternative to the S-Type, bridging the gap to the flagship Mark X. It featured a unique 'four-eyed' front end inspired by the Mark X and was powered by the 4.2-litre version of the legendary XK engine. The model utilised the sophisticated independent rear suspension from the E-Type, providing a superior balance of ride comfort and handling for a luxury saloon of the era. Though production was relatively short due to the arrival of the XJ6, the 420 remains highly regarded for its blend of classic styling and improved mechanical reliability.
Jaguar 420 specs
The Jaguar 420 produces 245 bhp (183 kW) and 384 Nm (283 lb-ft) of torque. It reaches 60 mph in 9.9 seconds and has a top speed of 123 mph (198 km/h).
| Make | Jaguar |
|---|---|
| Model | 420 |
| Trim | 4.2 |
| Years | 1966–1968 |
| Type | Classic |
| Body style | Saloon |
| Country | United Kingdom |
| Production | About 10,236 built |
| Original price | About $5,900 when new |
| Engine | 4.2-litre straight-six |
|---|---|
| Displacement | 4,235 cc (4.2 litres) |
| Induction | Naturally aspirated |
| Power | 245 bhp (183 kW) at 5,500 rpm |
| Torque | 384 Nm (283 lb-ft) |
| Redline | 5,500 rpm |
| 0–60 mph | 9.9 s |
| Top speed | 123 mph (198 km/h) |
| Transmission | 4-speed manual with overdrive |
| Drivetrain | Rear-wheel drive |
| Weight | 1,676 kg (3,695 lb) |
| Power-to-weight | 146 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Jaguar 420 worth?
A typical Jaguar 420 is estimated to be worth $14,000 – $45,000 (about £10,000 – £34,000).
Its original price when new was about $5,900.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Jaguar 420 rarity in CarSpot
The Jaguar 420 is a Rare card in CarSpot, with a rarity score of 47 out of 100. Performance cars, typically worth around £50,000 to £100,000. A Rare card is worth 40 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Jaguar 420 fun facts
- The 420 was sold alongside a badge-engineered twin, the Daimler Sovereign, which featured the traditional fluted radiator grille.
- It introduced a new Marles Varamatic variable-ratio power steering system, which was significantly more responsive than the systems in earlier Jaguar saloons.
- Despite its 'compact' designation, the 420 offered nearly the same performance as the contemporary E-Type 4.2 in a much more practical four-door body.
