This is a 1970's ad for the sports version of the Mazda RX3, the SP. The RX3 used Mazda's rotary, or Wankel engine, the 12A version with twin rotors. This was coupled to a 5 speed manual gearbox. The RX3 already had a long racing history when this version was released.
The engine came with a 5 year 75,000 mile warranty, such was Mazdas confidence in the reliability of the powerplant.
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From @jasonwhite