Ahh, back when Mercedes meant something. Must feel special -excuse pun haha.
I thought you were going to say an Aussie built Nissan Skyline when you mentioned 3.0 litre six.
I imagine more heft and an automatic transmission, plus much more power than the Holden contribute to no better economy.
My 8v B6 engined 89 Laser Ghia is lucky to do that well even with EFI. The manuals do much better apparently and the auto Lasers of that era were known to chew the juice I have read.
