Apart from highly specced 2.6's and 16 valvers , both of which were fairly expensive cars to start off with ( and were NOT bought because that was the entry level Mercedes and the only one the original buyer could afford ) it tended not to be specced because it was a costly option .
The majority of 190's in this country tend to be fairly basic spec with the 1.8 or 2.0 engine , cloth seats , about as many have wind up windows as electric and are split evenly between auto and manual . For most owners , this car was the chance to have a Mercedes they could not otherwise have afforded , lots of expensive options was NOT an option !
Some 190's WERE bought by well-heeled customers who appreciated the fine chassis and the fact that it was just as pleasant to drive as an S Class of the day ; it was also more nimble in its handling and handier in town for parking etc . Those customers who chose a 190 in preference to the bigger Mercedes they could just as easily have afforded did tend to spec things like leather , cruise , electric heated seats and , perhaps , air-con .
Initially , Mercedes said the six cylinder engines could not be fitted to the 190 , but eventually , with modifications , the 2.6 was offered and tended to be bought by the better-off customers who wanted ( and could afford ) more refinement - these cars tend to have a higher spec than the four cylinder models .
The most expensive 190's were the 16 valvers ( they were the fastest production Mercedes in their day ) and the owners who could afford one again tended to tick all the boxes for options .
So - if you're looking for a basic 4 cylinder 190 , not many have air-con ; if a 2.6 takes your fancy , you are more likely to find one with it , plus leather and a few toys ; 16 valvers , especially autos , tend to have most options .