In the fall of 2015, the fourth generation N-series was introduced. The updates were similar to those in the T4 from the previous year. However, in the N-series, the wheelbase and turning radius remained unchanged. The cab was the same as in the T4. The N4 featured three 4.4-liter and three 4.9-liter models. In both engine sizes, one model was a low-rev version, where the highest torque was achieved at 1250 rpm with the Eco program. An additional power feature was available when using the power take-off (PTO). With the N174, Valtra once again achieved the title of the most powerful four-cylinder. The noise level was reported as 70 dB. As an optional extra, mechanical or pneumatic cab suspension was available.

The three largest models offered four equipment versions. The smaller models were only available as Hitech. The Hitech, Active, and Versu models all had a 5-speed creeper gear with shift automation and an electric range shift. The Active and Versu featured a launch assist, allowing the tractor to be stopped solely with the brake and start moving by releasing the brake and pressing the throttle. In these models, the engine speed was also automatically increased when hydraulic functions were used without affecting driving speed. A new feature was traction control. The Hitech had a traditional gear pump in the hydraulics (73 or 90 l/min). The other models had a load-sensing system (115/160 l/min) and separate hydraulic and transmission oils. The Versu and Direct had electronic control of the hydraulic valves, control armrest, and display. The Direct featured Valtra’s own stepless transmission.

In summer 2017, a new SmartTouch armrest was introduced for the Versu and Direct models starting from the N134. For the N174, a second additional power stage (201 hp) was added, available when the tractor was operating in the D speed range. For 2018, a 57 km/h speed option was also added to the N174, and the air brake system for trailers became standard.

Compliance with Stage V emission standards for the AGCO Power LFTN-D5 engines was introduced for the N174 in spring 2019, and for the N134-N154 models in fall 2019. New optional extras included an air-suspended Aires front axle and an additional cab terminal for ISOBUS.

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