Sports car project is still alive – and it could run on diesel
13 May 2010

Mazda is working on a new rotary engine for an RX-7 successor that can run on petrol or diesel – and offer much-improved fuel consumption compared with the recently discontinued RX-8.

The two-stroke 16X engine is designed to rectify the shortcomings of Mazda’s most recent rotary powerplant, including its high oil consumption. Sources in Japan say the new unit has achieved significant improvements in fuel efficiency.

But the final go-ahead has not yet been received from Mazda’s top executives. The firm is still working out how to attain the best combination of performance, economy and emissions, and needs to address the rotary’s lack of torque in the mid-range. In its current state the 16X is expected to give the RX-7 around 300bhp and enable it to reach 60mph in under five seconds.

Mazda’s R&D department has invited several external drivers and racers to test RX-7 mules, and the design team has sought feedback at customer clinics.

Much of the push towards another rotary-engined sports car comes from Mazda USA. A recent independent survey revealed that demand for an affordable rotary-powered sports car is still as strong as it’s ever been in the US. It’s been suggested that were it not for American demand for the car, the project would have been shelved.

Peter Lyon

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Comments
10

13 May 2010

Full credit for soldiering on with a concept which brought NSU to it's knees, and worried Citroen so much they secretly bought up all the Amis and GS models they had sold. BUT whilst I loved the RX3 back in 70s, and even pondered getting an RX8 myself one big question mark remains, torque. Torquing of which the article gives no figures to back up the alleged improvement. Oh, and what about emmissions? I wish Mazda all the best, but fear they'll pitch the price too high, the old RX7 was great value. The current RX8 doesn't acknowledge folk want a good sat-nav and iphone connectivity package. You can't even spec Sat Nav, hopeless! Is it beacuse you'll probably run out of fuel before reaching the next county on one tankful?

13 May 2010

[quote Autocar]Mazda is working on how to address the rotary’s lack of torque in the mid-range[/quote]

Simple. Get rid of the gearbox, get rid of the differential, get rid of the driveshafts, hook the Wankel up to a generator and whack a pair of hub motors on the back. Instant series hybrid, huge torque from zero RPM, vastly increased efficiency. There you go, Mazda. If you're reading this, post with details for the relevant department for me to contact, so we can negotiate the terms of payment for my idea... =P

13 May 2010

Why oh why did the EU say they can't sell the RX8 here any more? What the Co2 emissions? What about Ferrari's new 599 GTO 411kg of Co2 how pathetic is that!!! It's ok for Ferrari but not Mazda what a load of crap!!!

13 May 2010

Guffria, I thought Mazda pulled the RX8 because the emissions made it uncompetetive in it's sector, rather than it being banned?

13 May 2010

If they dont hurry up all its rivals will be running on electric by the time its launched.

13 May 2010

I love this kind of stubbornness in car manufacturers although it's usually a TVR type company that goes against the grain rather than a mainstream manufacturer. I hope Mazda can bring things upto date with Rotary power and I wish them all the best.

13 May 2010

Only 2 words for Mazda:

GOOD LUCK !!

Actually, here's some more. A question actually. If the United States is the target market, why are they developing a DIESEL engine ?

13 May 2010

PHEWY!! That deceased horse is smelling a bit ripe.

13 May 2010

i believe the rotary engine is nicely suited to hydrogen fuel, mazda should make use of the benefits of the engine type rather than get bogged down in making it compete as it is on emissions and economy using petrol.

14 May 2010

[quote Guffria]

Why oh why did the EU say they can't sell the RX8 here any more? What the Co2 emissions? What about Ferrari's new 599 GTO 411kg of Co2 how pathetic is that!!! It's ok for Ferrari but not Mazda what a load of crap!!!

[/quote] Nice attempt to troll. The GTO will probably do 2000 miles/year while your 250g/km CO2 Mazda does 30,000 miles/year and sold in 2000 times the number of GTO's sold. Work out the maths....

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