Introduction

The John Deere 6155M is a mid-size, premium utility tractor in the acclaimed 6M Series, designed for versatility across livestock, mixed, and arable farming.

Praised for its engine performance, adaptability, and operator comfort, the 6155M stands at the forefront of mid-range tractors.

John Deere 6155m Dimensions

Length (standard): 15 ft 5 in (4.7 m)

Width: Varies with tire configuration; typically around 8 ft (2.4 m)

Height (top of cab): Approx. 9.8 ft (3 m)

Wheelbase: 108.9 in (2.76 m)

Ground Clearance: Approx. 19.5 in (495 mm)

John Deere 6155m Key Specifications

Key Metric Value
Base Price (2024) $179,000–$306,500
Engine John Deere PowerTech™ 6.8L, 6-cyl
Rated/Max HP 155 / 172
PTO Power 125 hp
Transmission 16 or 20-speed options, Auto/CommandQuad
Hydraulic Flow 114 L/min (30 gpm)
Base Weight 14,770 – 17,637 lb
Wheelbase 108.9 in (2.76 m)
Main Problems Emission sensors, hydraulics, electronics

John Deere 6155M: Engine Features & Horsepower Options

Engine Features

Model: John Deere PowerTech™ PVS 6.8L

Engine Type: 6068HL555, 6-cylinder diesel

Displacement: 6.8 liters (415 cu in.)

Aspiration: Single variable geometry turbocharger

Emission Compliance: Final Tier 4 (FT4) / Stage V compliant

Aftertreatment: Diesel particulate filter (DPF), diesel oxidation catalyst (DOC), selective catalytic reduction (SCR) with DEF

Rated Speed: 2100 rpm

Cooling: Liquid-cooled

Fuel System: High-pressure common rail injection

Air-to-air intercooling: Improves engine efficiency

Torque Rise: Strong across typical work rpm range

Durability: Wet sleeve design for long life and easier service

Diagnostics: Electronic engine management with advanced sensors

Power Management: Intelligent Power Management (IPM) provides additional horsepower during transport and PTO-heavy tasks.

Horsepower Options

Category Value
Rated Engine HP 155 hp (114 kW)
Maximum Engine HP 171–172 hp (125–126 kW)
PTO Power (Rated) 120–125 hp (90–92 kW)
Max PTO Power Up to 139 hp (103 kW) at 1000 PTO rpm

The 6155M is standardized with a single engine configuration but offers a power boost function for select high-demand tasks through IPM, raising power output by up to 20 additional hp when needed.

Power and features are consistent across markets, emphasizing a balance of performance and fuel efficiency for a wide range of farm and utility uses.

John Deere 6155m Performance & Features

Engine & Emissions:
TheJohn Deere 6155m features a John Deere FT4 PowerTech™ engine, balancing increased torque rise with fuel efficiency and meeting the most stringent emission standards.

Transmission Choices:
Multiple advanced gearbox options enable tailored performance for varied operations, from PowrQuad™ to CommandQuad™ Plus with 40 km/h transport speed.

Hydraulics:
Powerful 30-gpm system supports heavy implements and loader work.

Operator Comfort:
Modern, spacious cab with Digital Corner Post Display, ergonomic controls, advanced suspension (Triple-Link Suspension, TLS™), LED/halogen lighting packages, and enhanced visibility.

Loader Compatibility:
Designed for 640R Loader integration, optimized for loader comfort and control.

John Deere 6155m Common Problems

While the John Deere 6155m enjoys a reputation for reliability, users report some recurring concerns:

Electronic & Sensor Issues:
Occasional warnings from DEF (Diesel Exhaust Fluid) systems and emissions sensors.

Hydraulic Leaks:
Rare but possible, especially at higher hours or with intensive loader use.

Cab Electrical Faults:
Some reports of intermittent electrical gremlins in controls/displays.

Transmission Calibration:
Users recommend regular software updates and calibration for optimal shifting, particularly on CommandQuad and AutoQuad equipped units.

These issues are generally manageable with timely dealer service and regular maintenance.

John Deere 6155m Typical Applications

Livestock & Mixed Farming:
Ideal for baling, hay handling, and feed operations.

Loader Work:
High hydraulic flow and frame strength support heavy-duty loading.

Tillage & Planting:
PTO power and weight support medium-duty tillage and seeding tasks.

Municipal & Snow Removal:
Adaptable for snow blowing and roadside maintenance.

John Deere 6155m Price

Range (USA, 2024 model):

New: $179,000 to $306,500, depending on configuration and dealer.

Used: $112,000 to $168,500 (recent models).

Market prices can vary significantly due to hours of use, features, and region.

Conclusion

The John Deere 6155M is a standout choice in the 150–170 hp class, highly regarded for its efficient FT4 engine, versatile transmission options, and comfortable, tech-forward cab.

While some operational issues exist, they are comparatively minor and typically dealer-resolvable.

The John Deere 6155m delivers robust all-around value for professional growers and agri-businesses seeking long-term return on investment.