Mazda's new petrol engine has a compression ratio higher than anything used before

Mazda will launch a new petrol-powered 2 supermini that will be capable of almost 80mpg without any electrical assistance, which would make it the most fuel efficient car of its kind.

The Mazda 2 will be equipped with Mazda's Skyactiv engine and transmission and is set for launch in Japan in the first half of 2011.

Mazda's new Skyactiv-G petrol engine has a compression ratio of 14:1, higher than anything used before in a production petrol-powered vehicle. The engine uses 15 per cent less fuel than its previous power trains, the company claims. When launched in the 2 next year, the car will return 78mpg.

Read more on Mazda's radical future tech

Its Skyactiv-D diesel engine also sets a new record for the lowest compression ratio of a production diesel engine ever, just 14:1, increasing fuel economy by 20 per cent, according to Mazda.

New transmissions have also been developed to ensure enhanced efficiency. Mazda's Skyactiv-Drive automatic improves fuel economy by up to seven per cent and its light-weight Skyactiv-MT manual reduces internal friction for improved figures.

Read more on the facelifted Mazda 2

Body and chassis also fall under the Skyactiv umbrella: all future Mazdas will be around eight per cent lighter and 30 per cent stiffer than than the models they will replace thanks to high-tensile steels and optimised bounding materials.

As reported by Autocar at the end of August, Seita Kanai, Mazda's R&D supremo, says the new corporate platform and engines are legislatively future-proofed for a decade.

See all the latest Mazda 2 reviews, news and video

Our Verdict

Mazda 2 2007-2014
The Mazda 2's platform was engineered in-house, but shared with the Ford Fiesta

Back in 2008 the Mazda 2 was voted World Car of the Year. Considering the car’s engineering thoroughness and individuality, that shouldn’t be a surprise.

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Comments
8

21 October 2010

Fantastic to see what can still be done with the old ICE. Well done Mazda. The current 2 is pretty good. Sounds as if the next one will be much better.

21 October 2010

Very clever engineering, on both the petrol and devil juice front. Maybe this is the way forward, but it will only be really good when they can get a 4.0 ltr V8 to do 50 MPG!!

To live is to drive

21 October 2010

[quote Autocar]almost 80mpg with any electrical assistance[/quote]

Perhaps the writer meant "without" any electrical assistance

Its amazing to think how engineers can produce a car to achieve these results. My 20 year old Miata has achieved 50.6 mpg on a tank and often got over 45 mpg this year

http://www.flickr.com/photos/d70w7/4405733709/

C2100

21 October 2010

I hope it's true, because as we all know what the book says has the car will do and the actual figure are usauallly totally different?, you may occasssionaly get within a mile or two, but very rarily, mine is suppoed to do 36.7mpg, my best is 34mpg, my average, 30.3mpg, no car does what it says on the tin, no car!.

Peter Cavellini.

21 October 2010

[quote Peter Cavellini]no car does what it says on the tin, no car![/quote] All in the small print I'm sure if you drove your car on a rolling road under the required test conditions you would achieve what it says on the tin. It's about time they made the test reflect the real world or at least make the results translatable to the real world. 1. drive with a lead foot 15 mpg 2. drive like your mum 45 mpg 3. drive in the city 4. drive on the motorway etc

21 October 2010

[quote Autocar]Body and chassis also fall under the Skyactiv umbrella: all future Mazdas will be around eight per cent lighter and 30 per cent stiffer than than the models they will replace thanks to high-tensile steels and optimised bounding materials.[/quote]


Optimised bounding materials, that will be a leap forward................I'll get my coat.

21 October 2010

[quote Citytiger]Optimised bounding materials[/quote]

Does that mean the seats are trimmed in kangaroo fur ?

21 October 2010

[quote Autocar]When launched in the 2 next year, the car will return 78mpg.[/quote] In what circumstances will it produce 78mpg. Motorway cruise, urban rush hour? I bet if I used it for my morning commute I'd knock at least 30mpg off that figure.

 

 

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