Jaguar publicity materials cite the weight gain as either 44 or 53 pounds, but the C/D scales measured 4098 pounds, 98 more than the XJR, 260 more than the XJ8 we tested in December 2003. Worst 2003 Jaguar S-TYPE Problems #1: Sudden, Unintended Acceleration 2003 S-TYPE Average Cost to Fix: N/A Average Mileage: 80,000 mi. Learn More. We're actively collecting data on the worst 75 years on and this story similarly applies to the Jaguar F-Type R. When it launched in 2013, Jaguar coined it the “spiritual successor to the E-Type.”. Like its grandfather, it comes in MjUx.