It is estimated that of the CO2 emissions produced over a car's lifespan 10% come from its manufacture and 5% from its disposal, with the remaining 85% coming from fuel use and servicing operations.
I think that depends on which set of calculations you look at and exactly what they class the manufacture As
Whether it mining raw material or just the production line
You also have the environmental impact of the lithium mining for battery's
And the huge and essentially gimmicky LCD screens
You then have to consider the vast amount of plastic in recyclable components in modern cars that are going into land fill
With all this taken into consideration the lifetime of a vehicle should weigh far more on our conscious than it currently does
And it is unsustainable for the majority of the population to buy a new car every couple of years