Perhaps you mean 190E 2.3-16V? The 2.6 is a six cylinder engine.
The 16V cars are very durable, and the engines are tough as nails. Some areas:
1. Most all the cars have had an updated timing chain tensioner, but make sure any one you look at has it.
2. The self-leveling suspension is reliable, but requires care and at higher mileages and parts can be a little pricey.
3. Finding replacement parts is no problem. MB parts supply is like NO other manufacturer. OE parts are available for cars even decades old.
4. Gas guzzling - compared to? The 16V is only a 2.3L four cylinder in a 2900lb car. It's not going to use gas like a V-8 or SUV. Not even close.
Make sure a qulaified MB mechanic has a look at the car. If it checks out, a 16V can be a hulluva fun "keeper" MB. I MISS mine!
1998 C230 "Black Betty"