Pa drafodaethau y mae'r Gweinidog wedi'u cael gyda gwneuthurwyr ceir am yr effaith bosibl ar gerbydau modur wrth yrru ar 20 mya am gyfnodau estynedig?
Wedi'i ateb gan Y Gweinidog Newid Hinsawdd | Wedi'i ateb ar 08/12/2023
Car manufacturers have not raised concerns with me about this issue, nor am I aware of any evidence from places such as London and Spain, where lower speed limits are now established, that there is an increased impact on motor vehicles. Slower driving speeds cause less wear and tear to vehicles, due to the reduced acceleration and braking required to drive at 20mph.