Komatsu Europe launches D175AX-10 dozer with claimed up to 27% power gain over D155AX-8

Komatsu Europe has introduced the D175AX-10 bulldozer, a new-generation large dozer for earthmoving and quarry work that it says delivers up to 27% more net engine power than the D155AX-8 it succeeds.

The manufacturer announced the machine from its Vilvoorde headquarters on 29 October 2026. Komatsu Europe International n.v. is the European headquarters of the Tokyo-based Komatsu Group.

Komatsu Europe said the D175AX-10 also offers 18% more drawbar power, up to 25% higher production and up to 15% better fuel efficiency than the outgoing model.

Gregory Peeters, Product Manager Large Machines at Komatsu Europe, said: "The D175AX-10 represents a significant step forward in our large dozer range."

The claimed gains

Measure (Komatsu Europe claim v D155AX-8)	Gain
Net engine power	up to 27%
Drawbar power	18%
Production	up to 25%
Fuel efficiency	up to 15%

The European release describes the powertrain only as a next-generation Komatsu engine and transmission. Komatsu's North American newsroom, which previewed the machine at CONEXPO-CON/AGG 2026 in a release dated 3 March 2026, put the output at 450 HP (336 kW), up to 26% more than the D155AX-8, and named the engine as the DBA127 EGR-less unit. The North American release also claimed a 35% tighter turning radius, a figure the European release does not repeat.

According to that March release, the D175AX-10 is the first of Komatsu's next-generation -10 large production dozers and introduces a new main frame, track frames, powertrain, cab and blade system. Komatsu Europe's product page gives the U blade as 4.13m by 1.81m; the D155AX-8 page lists a 9.4 cubic metre blade and an EU Stage V engine.

Automation and cab

Komatsu Europe said automated functions include Blade Auto Pitch, which sets the blade position during the working cycle, automatic ripper functions, Neutral Auto Brake, stepless travel-speed adjustment and programmable speed settings.

The redesigned cab has a heated and ventilated air-suspension seat, electrically adjustable consoles and Komatsu's Palm Command Control System, with a touch-screen monitor and a 10-inch KomVision display.

Standard safety equipment comprises a ROPS/FOPS cab, inclination monitoring, an Operator Presence Sensing System and a seat belt reminder with an external beacon.

Connected jobsite

The dozer can be fitted with Komatsu Smart Construction 3D Machine Guidance Flex, which uses track-level positioning to give the operator real-time guidance and links to Smart Construction Dashboard so customers can compare as-built data with design and monitor cut-and-fill volumes. The company said the machine is also ready for integration with Smart Quarry Site, its all-makes fleet management system with five dashboards covering utilisation, fuel and CO2 emissions, fleet focus, production and an operator scorecard.

Komatsu Europe announced 3D Machine Guidance Flex on the same day, extending its excavator guidance offering to bulldozers, wheel loaders, dump trucks and other equipment. It said more than 9,000 of the excavator systems have been sold, and that buyers of a Flex system receive eight years of access to Smart Construction Remote.

Ian De Dobbelaere, Commercial Project Manager at Komatsu Europe, said: "Every pass changes the jobsite, but when that change is not captured, it remains invisible in the project data."

Servicing

Komatsu Europe said the D175AX-10 has centralised, ground-level service points, fluid-level checks from inside the cab, easier oil sampling, a swing-out cooling fan and remote lubrication points. The redesigned diesel particulate filter has a cleaning interval of up to 8,000 hours.

Availability

The European release gives no availability date or price for the D175AX-10. In March, Komatsu said the machine was targeted for introduction in North America in 2026, with timing subject to change.

Komatsu's UK factory, Komatsu UK Ltd at Birtley, County Durham, builds medium and large crawler excavators of 17 to 70 tonnes and working gear excavators.