Date registered: Oct 2004
Vehicle: 04 E320 4Matic
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My former car, a 1994 C220, used to have automatic locking differential, which I guess was a step ahead of the limited slip differential discussed here. At the time I bought my car, ASR was only available to more powerful cars like the C280.
I once had a slip on a steep slop in the rain and the automatic locking differential kicked in. It did not help a lot and I barely avoided an accident by lifting my foot from the throttle and steering carefully to safety.
Now, as pointed out by other members above, there are more advanced traction control systems like ASR available, rendering limited slip differentials obsolete. However, IMHO, if a used car is what is contemplated, it is still good to have limited slip (or automatic locking) differential on it if it is not equipped with a more advanced system.