We've gathered together the most powerful wheeled tractors on the market for a monster multitest. And for the first time ever we've looked at the running costs of all the technology being used to clean up what's coming out of their exhaust stacks as well as how they really perform in the field. It's a trial of opposites: AdBlue against particulate filter, stepless transmission versus powershift, heavy draft workhorse takes on all-rounder. Seldom has a test proved such a challenge for the test team.
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