Please check out pictures on the left, the car in question.
Please find below the original description added from the owner of that car:
“Suzuki SX4 diesel four-wheel Year 2011 – 22-25% bigger range
Suzuki SX4 diesel four-wheel built in 2011 before the installation of the BE-Fuelsaver, it had a 670 km range, now it has about 900 km that’s about 22-25% more. (2014)
Kind regards
Claus Ackermann”