Mack MP7 (Volvo D11-derived)
10.80L Inline-6 turbo diesel • Mack (Volvo Group)
About the Mack MP7 (Volvo D11-derived)
The Mack MP7 is a 10.8L inline-6 turbo diesel — sister engine to the Volvo D11 (same architecture, Volvo Group manufacturing). Used in lighter Class 8 applications where the MP8 13L is overkill — regional haul, lighter vocational, refuse, and severe-duty service body. Volvo and Mack share engine platforms under Volvo Group ownership. The MP7 has had reliability issues in stop-and-go applications but improved post-2017 with refined SCR.
Overview
The Mack MP7 is a 10.8L inline-6 turbo diesel — sister engine to the Volvo D11 (same architecture, Volvo Group manufacturing). Used in lighter Class 8 applications where the MP8 13L is overkill — regional haul, lighter vocational, refuse, and severe-duty service body. Volvo and Mack share engine platforms under Volvo Group ownership. The MP7 has had reliability issues in stop-and-go applications but improved post-2017 with refined SCR.
Specifications
- Manufacturer
- Mack (Volvo Group)
- Displacement
- 10.80 liters
- Configuration
- Inline-6 turbo diesel
- Fuel type
- Diesel
- Horsepower
- 325–425 hp
- Torque
- 1260–1560 lb-ft
- Production years
- 2007–present
- Truck classes
- Class 8
- Applications
- Regional haul, vocational, refuse (lighter Class 8)
Design and engineering
10.8L inline-6, cooled EGR + SCR + DEF aftertreatment. Common rail injection. Shared architecture with Volvo D11.
Generations and emissions eras
Reliability and longevity
Comparable to Volvo D11. Refuse applications stress aftertreatment heavily.
Common problems
EGR cooler cracking at 400K+ miles. NOx sensor degradation. DEF system issues. Aftertreatment requires more service-intensive PM than Cummins competitors.
Pros and cons
✓ Pros
- • Mack heritage in vocational/refuse
- • Right-sized for Class 8 vocational
- • Volvo Group engineering
⚠ Cons
- • EGR cooler issues
- • DEF system complexity
- • Smaller dealer network than Cummins/Detroit