Is my car normal?

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6.1 Is my mileage unusually low?

The official EPA mileage ratings for the 3rd generation RX-7s is:

Real world experiences from the net vary from this. A highly modified car has gotten higher than EPA predicted mileage, but this is the exception. Most people on the net get lower mileage, with 12 MPG in mixed city and highway driving being a common number.

6.2 How much oil should my car consume?

The RX-7's engine consumes oil by design. It has oil metering pumps that actually inject oil into the combustion chambers to be burned as you drive. The amount you use will be determined by how aggressively you drive.

6.2 Sometimes my car backfires, is this bad?

No. Backfiring is caused by unburned fuel being ignited in your exhaust system. Backfiring in itself, although annoying, is not harmful. Excessive backfiring can be an indication of another problem.

6.3 What is typical 3rd Gen performance?

A typical, stock 3rd Gen should be able to turn about a 14.2 or better in the quarter mile, and a low 5 second, or better, 0 to 60 time.

6.4 What are normal boost patterns?

According to the official Mazda test procedure, boost should be as follows:

• Drive to third gear with normal acceleration
• Accelerate from 35 MPH at WOT until passing 4500 RPM
• A slight and smooth increase in power should be felt at approximatly 4500 RPM. This will be about 65 MPH.

Boost should be above 10 PSI up to 4500 RPM. The boost will drop to about 8 PSI just after 4500 RPM, and will begin rising towards maximum boost depending on the length of time the throttle is held wide open.

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