A word of warning to anyone out there about to buy one of these vehicles. They actually have a factory issue where the engineering department only specified a head bolt tension of 54 foot pounds where as at least 70 is required to withhold the pressure of combustion. This problem is completely fixable. The following methods are listed from best to worse.
1. Resurfacing + Metal Head Gasket + Studs to replace Bolts + Higher Stud Tension.
2. Resurfacing + Standard Head Gasket + Studs to replace Bolts + Higher Stud Tension.
3. Resurfacing + Metal Head Gasket + Higher Bolt Tension.
4. Resurfacing + Standard Head Gasket + Higher Bolt Tension.
5. Standard Head Gasket + Studs to replace Bolts + Higher Stud Tension.
6. Standard Head Gasket + Higher Bolt Tension.
The duration each method will last has not yet been determined but I personally have pulled apart a 7MGE motor with the 6th option which seemed about 3 years old. It had held up perfectly even though the engine had obvious signs that it was thrashed.
This would need to be completed before the original head gasket had completely failed otherwise water could have leaked into the engine causing damage to the bottom end.
So I believe that any cressida which has been correctly repaired should be a very reliable. luxurious car.