Yaris Hsd - Super Or Not So Super...unleaded

[FROSTYBALLS]

Are you sure those figures are right Frosty?

My Yaris D4D says it is 17.5:1 and that was considered pretty low at the time; Most bigger engine diesels at the time, at least VW ones, were up in the 20:1 area IIRC!

The Mazda's 14:1 is the lowest I have seen tho'; I bet that'll be a absolute ***** to start in sub-zero weather without some seriously powerful glowplugs!

The compression ratio figures are Toyota's, and taken from their own material. The 1.4 D4D compression ratio is for the Optimal Drive engines.

The Mazda Sky Activ G engine is petrol.

[Cyker]

Wow, I didn't realise they were all so low! So my D4D has the highest compression ratio of all the D4D's?!

Mazda are doing some weird stuff tho' - I thought you were talking about the diesel as their diesel engine is also 14:1!

That's just freaky, they've somehow raised the petrol compression ratio higher than should be possible and also dropped the diesel compression ratio lower than should be possible!

This isn't madness, this is Mazda!