Here's a fun head-to-head of the '96 XJ12 vs. the 750il and the Benz s500 (they tested it instead of the s600 bc the latter was $50k more expensive).

It tested the xj12 at $92k and change. That's a crazy markup for the bigger engine, considering the Vanden Plas was in the mid $60's...

https://www.caranddriver.com/compari...omparison-test

For my 1991, the info @luvmyxjs was able to give me was:
Base XJ6: $43,000 USD
Sovereign (with sunroof, walnut inlays, etc.) $47,800 USD
Vanden Plas: $52,800
Fuel: 17-22mpg

 

I had not seen that article thank you.

 

 

My 1994 XJS 6.0 V12 Coupe was $69,950 / $57,079

 

I have the original sticker on my 1996 4.0 XJS and its reads $62,180 as equipped (leather, 4 spd auto, security system, etc...) includes shipping and California emissions cert.

 

Looking at the previous owners installment contract, he paid $48,899.00 here in Pennsylvania for my '93 4.0 conv.

 

I ordered a copy of the "Standard Guide;" it's really interesting and filled with cool info. Most interesting to me (as an XJ40 fan) is the big price jump in 1994. The base XJ6 was around $43-44k USD for most of 1988-92, but then in 1994 it jumped to $52k.

It then stayed pretty consistent for the next ten years, with the 2003 XJ8 at $56k USD.

 

My 1989 build (1990 compliance) coupe was $130,000AUD in 1990, that's about what I paid for my house in Sydney's northern suburbs. Adjusted for inflation based on Sydney house prices over $1M AUD in today's money.

 

Original sticker says...$79,950 USD
for my 94 2+2 Convertible
Wish it was worth that now!
...Jimmy