Suggestion: It is indeed the manufacturers' efforts to produce a car which consumers would like that led to such great progress in Japan's car industry in recent years. Hope that helps! Martha

Why use 'industries' rather than 'industry'? What are the different ones you are thinking of?

manufacturers ? correct for what? grammar? ease of reading?

I need some further clarification. By the use of the word 'indeed', I assume you have previously spoken of those efforts. 'Lead' is in the past tense, is it not? I will need to change the wording, not because it is wrong, but it is confusing.