Classic Car

Mercedes-Benz (1968–1976)

Mercedes-Benz W114 /8. Inline-6 petrol models: 230.6, 250, 280. The twin of the W115 four-cylinder.

15
Known Faults
15
Solved
3
Variants
0
Repair Guides

🚗 Variants

All production variants of the


🔧 Known Faults (15)

Community-reported faults with verified fixes


🛢️
W114 distributor contact breaker points wear
🟢 Solved · Beginner · 💰 $10–$35 USD
91%
34 fixes
🔩
W114 windscreen washer pump failure
🟢 Solved · Beginner · 💰 $10–$40 GBP
92%
28 fixes
🔩
W114 front wheel bearing worn — humming noise
🟢 Solved · Moderate · 💰 $60–$160 USD
82%
22 fixes
🛢️
W114 instrument voltage stabiliser failure
🟢 Solved · Easy · 💰 $15–$50 GBP
88%
21 fixes
🔩
W114 brake master cylinder internal bypass
🟢 Solved · Easy · 💰 $40–$120 GBP
87%
20 fixes
🔩
W114 brake master cylinder seal failure
🟢 Solved · Moderate · 💰 $80–$220 USD
88%
19 fixes
🔩
W114 front shock absorber failure
🟢 Solved · Easy · 💰 $80–$250 GBP
81%
19 fixes
W114 Zenith carburetor needle valve flooding
🟢 Solved · Easy · 💰 $15–$50 USD
78%
18 fixes
🛢️
W114 280E D-Jetronic ECU capacitor failure
🟢 Solved · Moderate · 💰 $60–$200 GBP
85%
18 fixes
🔩
W114 door hinge wear — sagging doors
🟢 Solved · Easy · 💰 $20–$80 GBP
84%
17 fixes
🔩
W114 rear differential output seal leak
🟢 Solved · Moderate · 💰 $30–$100 GBP
84%
16 fixes
W114 250 points ignition advance failure
🟢 Solved · Easy · 💰 $30–$120 GBP
79%
15 fixes
🛢️
W114 M130 twin carburettor synchronisation
🟢 Solved · Easy · 💰 $20–$80 GBP
82%
14 fixes
🔩
W114 front subframe rubber mount collapse
🟢 Solved · Moderate · 💰 $80–$250 GBP
76%
13 fixes
🔩
W114 timing cover gasket oil leak
🟢 Solved · Moderate · 💰 $40–$120 USD
74%
11 fixes

🩺 Common Symptoms

Symptoms reported across all fault cases


📋 Mercedes-Benz Overview & Buying Guide


Mercedes-Benz W114 /8. Inline-6 petrol models: 230.6, 250, 280. The twin of the W115 four-cylinder.

Which variant to buy?

The was produced in 3 main variants. The most powerful option is the 280E (M110) with 185 hp (M110.921 engine). When buying, always verify the engine code matches the claimed variant — swapped engines are common on classic cars of this era.

What to check before buying

Based on 15 reported fault cases, the most important pre-purchase checks for the are:

  • W114 distributor contact breaker points wear ✅ Known fix available
  • W114 windscreen washer pump failure ✅ Known fix available
  • W114 front wheel bearing worn — humming noise ✅ Known fix available
  • W114 instrument voltage stabiliser failure ✅ Known fix available
  • W114 brake master cylinder internal bypass ✅ Known fix available

Is the reliable?

Of the 15 fault cases recorded for the Mercedes-Benz on MyCarFault, 100% have a verified fix. Regular maintenance, correct service intervals and addressing known weak points early significantly extends the life of these vehicles.

Own a Mercedes-Benz ?

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