in stock form the windstar was NOT sold with manual trans.
any windstar with a manual is custom after market.
a ford tempo, focus, contuer engine trans would be a very out side the box windstar
the windstar had a 3.0 or 3.8L the 3.0 is ever so marganly better on mpg i randomly picked a year 1996 to compare.
with the 3.0L
Compare Old and New MPG Estimates
with the 3.8L
Compare Old and New MPG Estimates
your 11/17 mpg is right on par for dedicated city driving.
for an idea of what your windstar would get for mpg with a 4 poper and manual trans this is the last year of the dodge vans to get that set up 1995
Compare Old and New MPG Estimates
you could put a 2.0L out of a dodge neon in a van and get a little better mpg but it would be a silly slow, unless you found one of the DOHC 2.0Ls they had in the 90s then it wouldn't be quite so bad.
my 0.01C find a van with a I-4 and manual trans.
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1 86 T\D trooper with rare GEN 3 rods
TRANS FIXED NOW DD
1 86 4WD 5sp pup is 2.3L gas, but plan on 2.2L diesel repower
1 91 trop, long term plan is a group buy of imported Isuzu 4JB1-T 2.8L I-4 engines, hoping to get price down to 2K not 3K plus
1993 sidekick my MPG toy, epa rating 26.
i get 29/31 with stock drive train.