If you drive the 5-speed correctly you will get better mpg, but how much I dont know.
When I almost bought my first Disco back in 1995 I wanted a 5-speed.
As long as you keep the sunroofs closed they wont be a problem, I like the extra light from them but I never open mine.
I never roll my widows down either though, always us the A/C...dont want to mess up my hair and all.

 

I could never sell mine. I almost did when I bought my house, I decided against it. I am sure that mileage is terrible any form this vehicle comes in. manual vs auto would have to be a personal driver more than anything. I am interested in one as a rough weather/offroader only. I have other cars for the daily, fuel efficient, hump.

I read your tread about the tranny's and I am would never buy one with out documentation anyway. Reading that only confirmed that thought.

you can always buy another corrado, they are short money now!

 

I have a 5spd and do like it. From what I've heard about the sunroof's I'm not too bothered I don't have them I do have the jump seats in cloth though in mine. I also have a spare set of jump seats in tan leather if you need a set in the future. I have a 94 auto I got cheap for parts. I'd even sell the cloth jump seats in my 95 as I don't use them and would sooner have the storage pace.

One thing I notice when looking for my 5spd was most of them came from up north and had salt corrosion underneath. (I'm in TX). I finally found one that had been in the south most of it's life and was rust free underneath and came with a good service history so I jumped on it.