M177 AMG
Mercedes-Benz · 4.0L TT V8
2014–present
"Handcrafted AMG V8. Massive power. AMG-level care needed. Expensive when wrong."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 3
Head bolt failure — early C63 (W205)
▸Coolant leak, overheating, milky oil in severe cases
Early W205 C63 M177 had head bolt issues. BMW resolved in 2016+ production. Check production date and any warranty work done.
Greek AMG buyers: verify production date. Pre-2016 W205 C63 check for head bolt TSB completion.
Oil degradation — M-car intervals critical
▸Increased engine noise, oil analysis showing degradation
M177 requires 5,000-8,000 km oil change intervals maximum. BMW LongLife intervals do not apply. Use 5W-40 approved spec.
AMG discipline in Greece: oil every 5-8k km, no exceptions. Neglect causes rod bearing and chain tensioner wear.
Intake carbon buildup (direct injection)
▸Rough idle, power loss at specific RPM, cold start hesitation
High-output V8 DI engine. Carbon accumulates on intake valves.
Budget walnut blast at 60-80k km service. Greek AMG workshops familiar with this.
This report covers the combustion engine only. Battery and electric motor reliability are not included.
Models with M177 AMG 31
Related Guides
Other Mercedes-Benz Engines
Tuning Potential
800hp+ possible
Frequently Asked Questions
Is the Mercedes-Benz M177 AMG reliable?
The Mercedes-Benz M177 AMG scores 65/100 with a verdict of CAUTION. It has 3 documented issues with total repair costs between €2,600 and €6,400.
What are the common problems with the M177 AMG?
The most common issues are:
- Head bolt failure — early C63 (W205) — critical, repair cost €2,000–€5,000, 0 km–60,000 km
- Oil degradation — M-car intervals critical — high, repair cost €200–€500, 0 km–∞
- Intake carbon buildup (direct injection) — moderate, repair cost €400–€900, 60,000 km–120,000 km
What cars use the Mercedes-Benz M177 AMG?
How much does it cost to repair the M177 AMG?
Total potential repair costs for all 3 known issues range from €2,600 to €6,400. The most expensive issue is typically .
What years was the M177 AMG produced?
The Mercedes-Benz M177 AMG was produced from 2014 to present. It is a 3982cc V8 petrol turbo engine.
Scores are calculated from documented issues, repair costs, and failure patterns across thousands of owner reports and technical sources. Learn about our methodology. Always inspect before you buy.