The new XF is powered by PACCAR MX-13 and MX-11 engines, developed for maximum efficiency, high performance and low operating costs.



The common rail fuel injection system of the new Euro 6 PACCAR MX-13 engine allows high injection pressures of up to 2,500 bar, and provides the opportunity to use pre- and post-injection, or a combination of both. This results in a finer atomisation and many more opportunities to optimise combustion to ensure the lowest possible emission and noise levels, and the best possible fuel efficiency. Like the unique two pressure pomps, also new and advanced engine software and new sensors and actuators are playing an important role in this regard. These systems now function even faster and more accurately to ensure that the optimum mixture of air, exhaust gases and fuel is injected at all times. This is also key to achieving maximum efficiency and low emissions.

PACCAR MX-13 Euro 6 engine

Meeting the Euro 6 emission legislation was just one of the development drivers behind the PACCAR MX-13 engine. Of course, we wanted it to be extremely reliable and durable. It should also have a fuel economy at favorable Euro 5 ATe level and have the highest drivability with loads of torque. The PACCAR MX-13 holds a mix of proven state of the art technology and smart technical innovations. It is available with 303 kW/410 hp, 340 kW/460 hp and 375 kW/510 hp and torques of 2,000, 2,300 and 2,500 Nm within a broad range from 1,000 and 1,425 rpm. All this power goes to our new gearboxes. The AS Tronic automated transmission has unique features, including EcoRoll (truck rolling downwards with an idling engine) and FastShift (no clutch disengagement between 11th and 12th gear) to further enhance fuel efficiency. The newest generation Intarder 3 has higher output at lower speeds.


Engine Type Performance Torque
MX - 13 303 303 kW/410 hp
(1,425 – 1,750 rpm)
2,000 Nm
(1,000 – 1,425 rpm)
MX - 13 340 340 kW/460 hp
(1,425 – 1,750 rpm)
2,300 Nm
(1,000 – 1,425 rpm)
MX - 13 375 375 kW/510 hp
(1,425 – 1,750 rpm)
2,500 Nm
(1,000 – 1,425 rpm)



PACCAR Engine MX-11

PACCAR MX-11 engine

In developing the new 10.8 litre PACCAR MX engine, high performance, low weight and low fuel consumption were the main focus. In addition of course to reliability and service life, and optimum availability. The PACCAR MX-11 engine is available in the XF with the output of 320 kW/440 hp.

The new six-cylinder PACCAR MX-11 engine is completely new off the drawing board. The engine with its double overhead camshafts is lightweight and compact. Thanks, among others, to a synthetic oil sump, a single multi-belt and a fan driven directly by the crankshaft.

Engine Type Performance Torque
MX-11 320 320 kW/440 hp
(1,450 – 1,700 rpm)
2,100 Nm
(1,000 – 1,450 rpm)


PACCAR engine

Exhaust gas Aftertreatment System (EAS)

To meet the stringent Euro 6 emission requirements while ensuring the highest fuel efficiency, DAF has combined its advanced PACCAR Euro 6 engines with various exhaust gas after-treatment technologies: an SCR catalytic converter and a diesel particulate filter.

The ultra-modern common rail fuel injection system allows high pressures and enables the possibility for pre-and post-injection, or a combination of both to be applied. This produces a finer atomization of the fuel and many more possibilities to optimize combustion.


New gearboxes

The new XF is supplied as standard with a manual direct drive gearbox with twelve speeds, and a transmission with sixteen gears is available for heavy applications. The manual gearboxes come with "Servoshift" shift assistance as standard to increase comfort due to a reduced shifting effort and a short shift travel. To reduce operating costs, carbon synchromesh rings are used to maximise the service life. To increase ease of use, movement of the clutch pedal has been reduced from 154 to 135 mm.

The new AS-Tronic automated gearboxes feature a number of new DAF-specific functionalities. Newly developed software and new sensors mean that the clutch action is very gradual and even smoother, giving improved performance when driving off and maneuvering.

Thanks to EcoRoll, during slight descents the clutch is disengaged allowing a controlled ‘roll’ at engine idling speed. Fast Shift also contributes to the low fuel consumption.

daf axle

New rear axles

A new, robust SR1344 rear axle is also being introduced on the new XF. This has been fully optimised for weight and has been specifically developed for use with the Stabilink construction. A feature of the new axle is its low noise level. The lower oil level (10 instead of 15 litres) means a fuel saving and lower costs for oil changes within international transportation.

The SR1344 axle has a load capacity of 13 tonnes and is fitted as standard on combination weights of up to 44 tonnes and engine torques up to 2,300 Nm.

In order to completely customise the rear axle for specific applications, final reductions are available from 2.38:1. The SR1344 axle uses a new design of bevel pinion and crown wheel  saving 50 kilograms in weight.

For high combination weights (more than 44 tonnes) and on vehicles with the 375 kW/510 hp engine, the updated SR1347 axle has a lower oil level, meaning as favorable a fuel consumption as possible and lower operational costs.

Harris DAF Lea Valley AFT