Performance
As far as horsepower, the Jaguar XF packs quite a punch and will knock the Lexus GS 450h down a few rungs. On the flip side, bear in mind that high horsepower engines often command higher insurance premiums.
Handling
With their similar turning circles, the GS 450h and the XF most certainly handle almost the same into and out of tight spots.
Drivetrain
The Jaguar XF has a more massive engine than the Lexus GS 450h. Keep in mind that smaller engines typically get better gas mileage, but smaller engines can be stressed more.
The Lexus GS 450h could learn a lesson or two from the Jaguar XF as far as torque.
Utility
The Lexus GS 450h and the Jaguar XF can accommodate the same number of passengers.
Convenience
The XF's fuel tank will need to be replenished more often than the unit in the Lexus GS 450h.
Comfort
Taller drivers will considerably enjoy the extra head room in the Jaguar XF's front cabin compared to the GS 450h.
The XF is not particularly roomier for your passengers than the Lexus GS 450h.
Dimensions
The Lexus GS 450h's tank is roughly the same size as the Jaguar XF's, though the Jaguar XF's is somewhat larger.
The Lexus GS 450h and the Jaguar compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs almost the same to get the Jaguar XF to the dealership as the Lexus GS 450h.
The Jaguar XF requires a lot of gas compared to the Lexus GS 450h.
The Jaguar XF pales in comparison to the GS 450h as far as gas mileage.
The Jaguar XF is substantially costlier than the Lexus in terms of MSRP.
The Lexus GS 450h will save you a lots_of_money at the pump every year compared to the Jaguar XF.
The Jaguar XF will cost you a lots_of_money in gas every year compared to the Lexus GS 450h.
Warranty
The Jaguar XF and the GS 450h have the same basic after-sale protection.