1986 Mercedes-Benz W124 300D om603 non-turbo
Nothing has gone wrong so far except for the battery, which is normal for a diesel.
The car is a 6 cylinder car. 1 glow plug was blown, so it was a bit smokey on cold starts.
I've driven a lot of Mercs - 190D, 190 2.5, 250D, and a 300D turbo, but the 300D is another world; the 300D turbo 1988 was much, much faster, but the turbo has problems. The 300D is a much more reliable car, basic and easy to fix (D.I.Y.), and the performance is excellent. Fuel consumption is about 9 to 10 litres city per 100km, but it's worth it. I would recommend it to 250D users, because when you shift it into 5th gear, it stays there no matter how high your climbing is. The 250D would have to downshift to 4th or 3rd gear uphill. The engine is so powerful that if sometimes you stick it in 3rd gear instead of 1st when you are crawling, it still doesn't stall and you don't even realise that it is in 3rd gear. I would recommend it to anyone who is thinking of buying one.
If you are having cold start problems, check your glow plugs or heater relay; it's either that or your battery. The original battery is a 12 volt, 105 amp by the way. If you have a 90 amp battery, you might have problems starting in very cold weather.
Fill the tank and relax - it's a basic, powerful driving machine.
Would you buy another car from this manufacturer? Yes
Review Date: 26th May, 2017