I bought the 1994 XJ12 (XJ81) because this was the only year it came in the XJ40 body style. The car seems heavy compared to the excellent XJ6 (XJ40), but the 6.0L V-12 delivers much more torque. Still, a poor trade off and the fuel consumption is hard to take. If you're a Jag guy, the car disappoints a little. If you're not a Jag guy stay far away - it will eat you out of house and home.
Power. Interior. Ride. Sound system.
Balance weight front to rear. Shift-kit the transmission. Firmer ride. Fuel consumption is evil for 308HP.
Nice, solid car. Yes, it's had some minor service issues.
After the waranty ran out(get the extended warranty!), I got sick of
going to the dealer and getting raped, so I do all the little maintenance
items myself now, including oil changes.
Little niggling problems aside, a great car.
Power. Performance. Luxury.
Better dealer support. It's fend for yourselves out there.
What unbelievalbe value!! Fairly reliable. Only mechanical problems are just hoses on 7 year old car. Maintenance is expensive for the V12 but the thril of driving one is undescribalble. It is the feeling of always knowing there is power to spare. The car rarley down shifts. Fuel economy is about 14-16 mpg.
Now the good stuff:
Luxourous interior comparable to Bently or Rolls Royce
Superb ride quality & sound system.