Power & torque are eased back a touch and the map is optimised for the
lowest possible fuel use — best for daily commuting, towing and long
motorway diesel runs. Smoother, calmer, cheaper to run.
Fuel economy
−6%
Before
5.6L / 100 km
With ECO
5.3 L / 100 km
Saves ≈ 0.4 L / 100 km
— about 53 L (over 15 000 km) ≈
€93
Estimate for a typical duty cycle · real saving depends on load & driving style
