For the group of about 80 European journalists that Mazda has assembled in Tokyo, a significant point of our visit was a technical briefing from four of the company’s top engineers.

If you’ve ever wondered how Japanese car companies garnered their reputation for attention to detail, attending one of these briefings explains a lot.

In fact, as I write this blog in my hotel room, I am wading through a 32-page technical presentation festooned with graphs and charts enticingly titled ‘Temperature and Pressure at TDC*’, ‘Heat Release @2000rpm/BMEP=600kPa’ and ‘What is Adiabatic Combustion?’.

Engineers are king in most Japanese car companies, so today’s briefing is on their terms, a solid couple of hours delving into the deepest workings of the internal combustion engine. And thoroughly absorbing it is, too, even if the main message remains hidden until a pointed question-and-answer session shakes everyone up.

Mazda is keen to explain its ideas for future powertrain developments, partly because it is proudly ploughing its own technical furrow.

This is mainly down to necessity. Mazda is a comparatively small car company with about 1.2 million annual sales and without partners to lean on, it has to focus R&D cash in as effective a direction as possible.