🚗 Classic Fault — Mercedes-Benz W115 (1968–1976)
Clutch pressure plate worn — slipping under load
💰 Estimated Repair Cost
$150 – $400 USD
Parts and labour estimate
🔧 Tools Required
Gearbox removal tools, clutch alignment tool
📋 Overview
The clutch friction disc and pressure plate wear out. Clutch slip appears initially under hard acceleration or going uphill in a high gear, with engine revs rising faster than road speed.
🩺 Symptoms
- Engine revs rising faster than road speed
- burning smell from clutch
- slip worst under load
- clutch engagement point high
🔍 Possible Causes
- Worn clutch friction disc
- weak pressure plate springs
- oil contamination from rear crank seal
🛠️ Diagnosis Steps
In 3rd gear at 50 km/h, apply full throttle sharply. Revs rising without proportional acceleration confirms clutch slip.
✅ Most Confirmed Fix
Replace clutch friction disc and pressure plate as a set.
72% of users confirm this fix worked (16 reports)
🔗 Other Mercedes-Benz W115 Faults
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