MAZDA MODEL 3 5-DOOR 2015 Owners Manual
Manufacturer: MAZDA, Model Year: 2015, Model line: MODEL 3 5-DOOR, Model: MAZDA MODEL 3 5-DOOR 2015Pages: 592, PDF Size: 6.07 MB
Page 101 of 592

3–27
Before Driving
Fuel and Emission
     Fuel  and  Engine  Exhaust  Precautions
 Fuel  Requirements
            Vehicles  with  catalytic  converters  or  oxygen  sensors  must  use  ONLY  UNLEADED  FUEL, 
which will reduce exhaust emissions and keep spark plug fouling to a min\
imum.
  This vehicle will perform best with fuel listed in the table.
 Fuel  Octane  Rating *  (Anti-knock index) 
 Regular unleaded fuel   87  [(R
M)/2 method] or above (91 RON or above) 
      *   U.S. federal law requires that octane ratings be posted on gasoline stat\
ion pumps.
  Fuel with a rating lower than 87 octane (91 RON) could cause the emiss\
ion control system 
to lose effectiveness. It could also cause engine knocking and serious engine dama\
ge.
CAUTION
     
Page 102 of 592

3–28
Before Driving
Fuel and Emission
 Emission Control System
            This  vehicle  is  equipped  with  an  emission  control  system  (the  catalytic  converter  is 
part of this system) that enables the vehicle to comply with existing e\
xhaust emissions 
requirements.
WARNING
  Never park over or near anything fl ammable:
  Parking over or near anything fl  ammable, such as dry grass, is dangerous. Even with the 
engine turned off   , the exhaust system remains very hot after normal use and could ignite 
anything fl  ammable. A resulting fi  re could cause serious injury or death.
CAUTION
  Ignoring the following precautions could cause lead to accumulate on the catalyst inside 
the converter or cause the converter to get very hot. Either condition will damage the 
converter and cause poor performance.
     
Page 103 of 592

3–29
Before Driving
Fuel and Emission
 Engine Exhaust (Carbon monoxide)
WARNING
  Do not drive your vehicle if you smell exhaust gas inside the vehicle:  Engine exhaust gas is dangerous. This gas contains carbon monoxide (CO), which is 
colorless, odorless, and poisonous. When inhaled, it can cause loss of consciousness and 
death. If you smell exhaust gas inside the vehicle, keep all windows fully open and contact 
an Authorized Mazda Dealer immediately.
  
  Do not run the engine when inside an enclosed area:   Running the engine inside an enclosed area, such as a garage, is dangerous. Exhaust 
gas, which contains poisonous carbon monoxide, could easily enter the cabin. Loss of 
consciousness or even death could occur.
  
  Open the windows or adjust the heating or cooling system to draw fresh air when 
idling the engine:   Exhaust gas is dangerous. When the vehicle is stopped with the windows closed and 
the engine running for a long time even in an open area, exhaust gas, which contains 
poisonous carbon monoxide, could enter the cabin. Loss of consciousness or even death 
could occur.
  
  Clear snow from underneath and around your vehicle, particularly the tail pipe, before 
starting the engine:   Running the engine when a vehicle is stopped in deep snow is dangerous. The exhaust 
pipe could be blocked by the snow, allowing exhaust gas to enter the cabin. Because 
exhaust gas contains poisonous carbon monoxide, it could cause loss of consciousness or 
even death to occupants in the cabin.
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