Japanese brand to develop inline-six engines with compression ignition tech, financial presentation reveals
9 May 2019

Mazda is lining up a range of compression ignition straight-six engines, both petrol and diesel, as part of its anti-downsizing initiative. 

The plans were revealed in a financial year results report, compiled last month and published on Mazda’s global site before apparently being removed after media outlets spotted the plans.  

A slide from the report, below, lists ‘Straight-six Skyactiv-X engine’ and ‘Straight-six Skyactiv-D (2nd-generation Diesel engine)’ as two of its product investments for the future, alongside electric vehicles and hybrids. 

The two engines are listed under the branch of ‘Large Architecture’ - likely relating to the size of platform and body they will be mated to. Such a reference, alongside the development of engines (particularly a straight-six diesel) that almost exclusively sit in larger, premium-brand models in Europe, suggests that Mazda may expand its upper tier of future product offering to compete with Audi, BMW and Mercedes

Our Verdict

Mazda 3 2019 first drive review - hero front

The new 3 is a polished, premium product. Mazda's unique new engine is still unproven, but the first signs are promising

Find an Autocar car review

Driven this week

Both the two latter brands have had straight-six engines on the market for decades, while Jaguar will soon be returning to the layout - traditionally favoured for refinement and packaging. 

Mazda has never had a straight-six engine available in its models, with a V6 last used in the MX-3 coupé, which went out of production in 2002.

Mazda has been a champion of ‘right-sizing’ its engines, using its Skyactiv tech to retain larger-capacity units than most rivals, usually naturally aspirated, that still offer competitive power and efficiency figures. 

The Skyactiv-X system, making its debut on the Mazda 3 next month, uses Spark Controlled Compression Ignition, which is claimed to offer the efficiency of a diesel engine in a petrol. 

Read more

Hot Mazda 3 on the cards to take on VW Golf GTI

Under the skin: how Mazda is changing internal combustion

Mazda 6 2019 review

 

Join the debate

Comments
12

9 May 2019

Can’t wait to see how the petrol engines perform at 100,000 miles...

9 May 2019

 How many cars can you see?

Peter Cavellini.

10 May 2019

Mazda know something the rest of the auto industry don’t, or they’re archetypal drongos. 

What? New combustion engines in the 21st century? Didn’t they get the memo?

 

Robbo

Aussie Rob - a view from down under

10 May 2019

An interesting observation made elsewhere is that straight six engines don’t fit very easily into a transverse installation. So will this new architecture be inline and RWD?

10 May 2019
scrap wrote:

An interesting observation made elsewhere is that straight six engines don’t fit very easily into a transverse installation. So will this new architecture be inline and RWD?

yes it will be longitudinal and RWD with AWD even. It’s the 3rd point under the “Big Architecture” header. 

11 May 2019
alleggerita wrote:

scrap wrote:

An interesting observation made elsewhere is that straight six engines don’t fit very easily into a transverse installation. So will this new architecture be inline and RWD?

yes it will be longitudinal and RWD with AWD even. It’s the 3rd point under the “Big Architecture” header. 

 

Ah thanks I’d glossed over that! Potential return of the RX7? Let’s hope so.

10 May 2019

Will definitely be keeping an eye on these.  SkyActiv-X is already on my wish list to replace my current Focus and these could be the next on the list.

 

Mazda routinely top real-world fuel consumption surveys so I hope they manage to carry it on.

10 May 2019

Not so long ago the rotary engine was making a comeback, then spark ignition would save 20% in fuel costs but a supercharger would have to be added to give it some grunt and that would add 20% in fuel costs.  With petrol ICE one thing to efficiently save fuel is COD, just look how others are now following VAG.

Straight 6, all they need now is some cars to put it in.

typos1 - Just can’t respect opinion

10 May 2019
Hashtag I Heart Mazda!

X

11 May 2019

Someone has to show innovation: Mazda does at present; good luck to them!

A long time ago, there was the great debate about over-square engines? Who even remembers that debate? Innovators are risk-takers and when their idea is right, time proves them right. I don't think that I will be around to witness the success or failure of these new designs: pity, they sound very interesting!

Pages

Add your comment

Log in or register to post comments

Find an Autocar car review

Driven this week