So me and my dad went down to santa clarita to drop my little sister and brother off tonight (it's a 45 mile trip from driveway here to there) in his 1988 Mercedes 420SEL , which he just got recently. We've done nothing to this car yet other than an oil change. the car was fully loaded on the way down with luggage and 4 people in the car. It was 42 Degrees out so i was thinking crap
bad mileage. My dad drove about 65-75 the whole time. when we got there the car was smoking . The secondary cat is CLogged up and BAAD on there. So my dad was a little more concervative on the way back 60-70 MPH on the trip back
We used 4 gallons of gas and went 90 miles
I was like
22.5MPG
Not great i know but pretty good for a car that is bone stock with a bad cat
Sure our other mercedes' do better than this one on the freeway but i still feel this isn't bad for the car it is
I'll update the numbers after we fix the car