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PACCAR MX-11 Coach & Bus engine

The 10.8 Litre PACCAR MX-11 engine uses state of the art technologies, first class materials, extensive function integration and a heavy duty foamed wire loom to achieve highest reliability and durability. Excellent torque at low engine speeds and a high performance is available over a wide rev. range.

Aspired by double overhead cam system, the further optimized combustion process using smart dosing controls and modulating fuel line pressure assures excellent and lowest fuel consumption ever. Maintenance cost have been cut by extending the interval up to 150.000km.

In order to meet the stringent Euro 6 emission levels it features exhaust gas recirculation, SCR and an active soot filter. Depending on conditions a high efficiency mode is being set. The best engine has become even better.



PACCAR MX-11 coach & bus engine

Performance Torque Emission level
MX-11 220 220 kW/299 hp
at 1,675 rpm
1350 Nm at
900–1,400 rpm
Euro 6
MX-11 251 251 kW/341 hp
at 1,675 rpm
1500 Nm at
900–1,400 rpm
Euro 6
MX-11 270 270 kW/367 hp
at 1,600 rpm
1900 Nm at
900–1,125 rpm
Euro 6
MX-11 300 300 kW/408 hp
at 1,600 rpm
2100 Nm at
900–1,125 rpm
Euro 5/6
MX-11 330
330 kW/449 hp
at 1,600 rpm
2300 Nm at
900–1,125 rpm
Euro 5/6
• Power according to ISO 1585
• (Bio) Diesel fuel must comply with EN-590 / EN-15940 / EN-16734 / EN-16709
• Weight (dry) ± 1015 kg


No. of cylinders and cylinder 6 in line, vertical
Valves 4
Bore x Stroke [mm] 123 x 152
Piston displacement [dm3] 10.8
Compression ratio
18,5 : 1
Aspiration Turbocharged with charge cooling
Idle speed [rpm] 550 +50 -25
High idle speed [rpm] 2100
Max. speed during engine brake [rpm] 2100 
Firing order 1-5-3-6-2-4

General description

  • Compact Graphic Iron (CGI) cylinder block with improved cooling and vertical rips for max. strength & low noise
  • One piece CGI cylinder head with integrated air intake manifolds
  • Forged steel crankshaft without contra weights
  • High strength and wear wet liners with anti-polishing ring
  • Oil cooled pistons with 3 piston rings each
  • Low noise rear mounted distribution drive
  • 2500 bar common rail fuel injection with block integrated high pressure unit pumps
  • Wide angle fuel injectors with variable needle opening pressure
  • Electronic controlled single stage (VTG) turbo charging system
  • SCR/DPF exhaust after treatment module together with cooled EGR technology (euro 6)
  • Electronically driven Crankcase Ventilation System

Lubrication system

  • Pressure feed lubrication by a variable vane -type oil pump. Full flow main oil filter and a centrifugal by-pass filter (optional).

Cooling system

  • Water cooled thermostatically controlled and full variable water pump

Electrical / electronic system

  • Voltage: 24V
  • Starter motor: 6.2 kW
  • Alternators: 2 x 150 A, LIN controlled

Standard equipment

  • Flywheel: suitable for manual gearbox
  • Flywheel housing: SAE 1
  • Stainless steel oil cooler module thermostatically controlled
  • Electrically controlled back pressure valve (BPV)
  • Inlet and exhaust manifolds
  • Integrated fuel filter / water separator
  • Flat oil sump Alu
  • Exhaust After treatment System (EAS) incl. Ad-Blue tank and control units
  • Low energy air compressor with power saving system, 561cc displacement
  • Steering pump, 25cc 17,5 l/min, variable displacement
  • Engine mountings support, 4 bracket system
  • Oil level sensor for daily check


  • Gear driven rear engine PTO’s
  • Belt driven front engine PTO
  • Steering pump variants
  • Engine mounting vibration dampers
  • Engine mountings support, 3 bracket system
  • Flywheels suitable for ZF, Voith and Allison automated/automatic gear boxes
  • Integrated engine compression brake with enhanced braking power max. 340kW
  • Air compressor with power saving system, 636cc
  • Adblue tank variants
  • SCR/DPF module variants
  • Extended Service Interval
  • Engine and chassis installation parts on request