Volkswagen Golf GTI 2016, Owner'S Manual, Page: 1209 / 1341

Please first read and note the introductory information and
heed the WARNINGS →
Introduction
The catalytic converter provides exhaust gas after-treatment to help
reduce pollutants in the exhaust gas. To help ensure long service
life of the exhaust system and gasoline engine catalytic converter:
Only use unleaded fuel.
Never completely empty the fuel tank.
Do not exceed the correct oil level → Engine oil .
Do not tow the vehicle to start it, but use a jump-start instead
→ Jump-starting .
If you experience misfires, loss of power or the engine is not
running smoothly while driving, reduce speed immediately and have
the vehicle checked by an authorized Volkswagen dealer or
authorized Volkswagen Service Facility. Otherwise, gasoline could
reach the exhaust system and get into the atmosphere. The
catalytic converter could also be damaged by overheating!