Only compared to other very-high-output engines from the same year. I get around 23.5 mpg driving conservatively (which sort of defeats the purpose of having an RX-8).
Like most high-performance cars (Lotus and Tesla excepted), "spirited" driving will give mileage below 20 mpg. If you want good mileage, the newer V-6 Mustang and Camaro offer that with good handling. (Not as good as an RX-8, of course, but quite good.) Or a Lotus Elise if you have a lot of money.
The beauty of the rotary engine, IMHO, is that its tiny size allows for exceptional balance and handling. That, with the 9,000 rpm redline, makes it a lot like driving a 4-wheeled motorcycle.
The major reason why Mazda has stopped making the rotary engine (as of this year) is because it is impossible to get mileage as good as a piston engine from a rotary. (Even theoretically: the laws of Physics say so, because the surface area of the rotor is so much greater than that of a piston.)
The mazda rx8 is a car from the brand mazda. The rx8 has a rotary engine, so the "r" is defined as rotary. The x could be "Xperiment". The 8 is a catchy number and is after the 6 and 7 models.
The current rotary engine displaces 1.3 liters. 1.3 liters in a rotary is approximately equal to 2.6 liters of piston engine
10:1http://www.mazdausa.com/MusaWeb/displayPage.action?pageParameter=modelsSpecs&vehicleCode=RX8&bhcp=1
It is in fact neither. It is a rotary type of engine, there is nothing v about it.
10:1 - 12:1 through that range is fine
For all I know, for the RX8, about 1k or 10k of them were made a V6. All though if I remember correctley, one of Mazda's cars were not even produced with a rotary engine and I think it was called the Comet.
They have not stopped. Mazda still uses the NSU Wankel twin rotor engine to power the RX8.
Typically with the Mazda RX8 Rotary engine vibration at revs as high as 6000 is down to engine damage suffered when oil was low. Your engine requires rebuild or renewal. Vibration at idle only is typically engine mounts, a know fault many dealers are aware of.
I have a friend with 170,000 miles and he still drives it daily, I have another friend replacing his engine at 50,000 miles.
Both the Mazda RX7 and RX8 use a style of engine known as the Wankel Rotary engine. These engines are typically small but produce larger amounts of power than a standard cylinder based engine of the same size. See related links for a Wikipedia article on the Wankel Rotary Engine The RX8 is also special and noticeable for its looks (Well the 2009 one is) and the smoothness of the engine. The RX8 also uses a door style called 'Suicide Doors' which means both doors open in separate directions. It also has a good layout: Front engined rear wheel drive! It is a coupe and a four door saloon mixed together!
There is no "timing belt" There is also no camshaft nor any valves. The rotary engine does not use any of the above.
The Mazda RX-8 is equipped with a unique rotary engine known as the Renesis engine, which is a variation of the Wankel rotary engine. If you're considering replacing the engine in an RX-8, you would typically look for another Renesis engine, as it is specifically designed for that model. However, some enthusiasts may opt for aftermarket rotary engines or even conversions to different engine types, but these modifications can significantly alter the vehicle's performance and characteristics.