Buying a Mazda RX-4 involves finding a balance between its legendary rotary performance and the scarcity of original parts. Originally marketed as a more luxurious and larger alternative to the RX-2 and RX-3, the RX-4 is now a highly sought-after classic.

: The initial 1.2L unit producing approximately 130 hp (97 kW).

: Carefully inspect the rear bottom quarters , sills , floor pans , and door pillars . Parts for the 1970s RX-series are increasingly difficult to source.

: This is the most vital check. Use a rotary-specific compression tester to ensure the apex seals are intact. Difficulty starting when the engine is hot often indicates low compression.