The modern Bluemotion Golfs I have driven seem to want you to drive in 6th at 30mph. This combination also results in an annoying drone coming from the engine which I can't stand. You can't accelerate in that gear. Also, I don't take instructions from an arrow on a dashboard telling me what gear to be in. That's my judgement to make based on road and traffic conditions.
The "shift up" recommendations to me seem like an attempt to replicate the ideal conditions under which the official efficiency tests are done - and we all know about /those/ figures...
30 mph (almost 50 km/h) usually works very well on 4th in a 6-gear box, including accelerating, especially TSI engines which have a superb torque already on very low RPMs.
The "shift up" recommendations to me seem like an attempt to replicate the ideal conditions under which the official efficiency tests are done - and we all know about /those/ figures...