Developed by the British carmaker's Special Vehicle Operations, the car was able to lap the 20.6km circuit 2.9 seconds faster than its previous lap time, set in November 2017, with an officially-verified time of 7 minutes 18.361.
This also made the car 7.0 seconds faster than any other four-door production car.
The car returned to the circuit in a production-specification two-seat Track Pack version with development driver Vincent Radermecker at the helm.
The car’s height-adjustable twin-spring coil-over suspension was set in ‘track’ ride height, with adjustable front splitter and carbon fibre rear aerodynamic wing set for maximum downforce and stability.
Also, the car was fitted with new ultra-high-performance Michelin Pilot Sport Cup 2 R tyres while the underside uses a fully-enclosed flat underbody panel to enhance its aerodynamics.
The all-wheel-drive car uses an uprated 5.0-litre supercharged V8 with 600PS that can send it from 0 to 100kph in 3.7 seconds and onwards to a top speed of 320kph.
Prices for the Jaguar XE SV Project 8 start from £149,995 (est. RM770,000) in the UK.
Production of the limited-edition Project 8 will finish this year and there will be three distinct four-door specifications available which include the lightweight two-seater Track Pack (as used for the record lap times).
There is also the four-seater configuration with the same aero package and performance as the Track Pack and a Touring specification with a more discreet fixed rear spoiler – the ultimate Q-car which is limited to only 15 examples worldwide and 186mph (300kph).
“This new official record time is a fitting reward for everyone who has played a part in pushing the boundaries for our customers with Project 8,” said Jaguar Special Vehicle Operations engineering director Jamal Hameedi.