Don't get pissed, everybody, I love the M119, but the 129 absolutely LOVED the weight reduction and the more level torque afforded by the M113. In the USA, the '99 on cars also have the vastly better brakes which were adapted from the 220. We all go gaga over them, somewhat mistakenly calling them "SA brakes". The only thing that made them "SA" was the silver paint. They were otherwise simply the MY '99 on 129 V8/12 brakes. The '98 and prior V8 USA version cars have the 6 cylinder "rest of world" brakes, the same sizes and largely the exact same parts that we in yank got on the 500E until 3/93. The only difference was the front calipers were cast iron on the 129, the same iron calipers that were the remedy fitment for the pre-3/93 USA 500E if it had the howling/self-application syndrome, which ALL 500Es with those alloy calipers have. Don’t tell me yours doesn’t. You simply haven’t cruised fast enough for long enough to experience it…
Would I have a 129 with a M119? Oh, hell yes! Great cars. One of my all-time favorites, but those that dismiss them with a M113 relative to the M119 only because of the engine are working from limited perspective whether they know it or not. Also, so much less goes wrong with a M113, that it can be vastly cheaper to own, and it uses way less fuel...
Regarding the M120 cars, maybe my favorite MB engine, bar none. That said, take whatever ownership expenses that you know with a V8 car and AT LEAST double it. That IS what you WILL experience. This is also because the V12 cars also have as standard expensive high repair cost chassis systems like all around leveling with ADS as standard, while those were rare extra cost options on the 8 and 6-cylinder cars. And I almost forgot to mention, partly due to the sublime sound and feel of the engine, the heavier front end of the V12 129 is a detriment to vehicle dynamics. The standard ADS does help to compensate, but still, extra weight is extra weight, and contrary to the old Ford Pinto advertisements, that extra weight is not “road hugging“. The V12 USA cars do have the benefit of the “exclusive leather“ interior being standard, so at least you will not get the garbage door panels that detract so much from the 1996 on models should you get one.
Overall, no question, the 5L. V-8s are the “sweet spots” of 129 ownership, just as they are with my favorite barge, the 140. But if you don’t care what they cost to keep, and/or you can do plenty of your own work and parts sourcing, the V12s are F.M...
The six-cylinder cars? For my money, you can keep the CIS 104 motor used 1990 through 1993. If it is literally possible for an engine to produce negative torque, this one does. Couldn’t pull a greasy string out of a dogs ass until it is over 4000 RPM. Some compensation for that? It does have a 7000 RPM redline, and at least in the USA, a five speed automatic was standard equipment. For those luddites that like them, it can be found with the rare five speed manual transmission. Oh, I forgot to mention, the 93 did get full-time first gear start. That helped some. Many in Europe actually liked the car better with the single cam two valve M103, which was available there through '93. Far more appealing to me are the 1994 on six cylinder cars. The “plastic manifold” 3.2 L M104 is just a great engine. Adequate torque, six cylinder smoothness and zing, their only detriment is a slightly lumpy power delivery. You can really feel the two-stage intake manifolding and the intake camshaft timing switch. The glorious 7000 RPM redline was reduced to something like 6400, too. That’s not really a detriment considering that every other aspect of performance was hugely improved. For the 1997 model year, it received the electronically controlled 722.6 transmission. I’d have a 1994 on six cylinder 129...
But remember, the iron block 104 weighs about the same as the all alloy M119, so there’s really no front end weight saving. You get THAT with the M113...
