Best Spark Plugs for Mazda 3


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The larger the engine size, the more powerful the car, and the, as a rule, it is larger. Putting a small-cubic motor on a large car makes no sense; the engine cannot cope with its mass, and the opposite is also senseless – to put a large motor on a light car. So manufacturers try to match the motor … to the price of the car.

The more expensive and more prestigious the model, the larger the engine on it and the more powerful it is. Budget versions rarely boast a cubic capacity of more than two liters.

 

2003 2004 2005 2006 2007 Mazda 3 Spark Plugs

Info/Engine 2.3L MZR engine 2.0L MZR engine
OEM spark plug gap 0.052″ (1.32mm) 0.052″ (1.32mm)
Qty. needed 4 4
Change interval 75,000 miles 75,000 miles
Best spark plug NGK 5598 PTR6D-13 Laser Platinum NGK 5598 PTR6D-13 Laser Platinum
Popular choice NGK 3692 TR65IX Iridium IX NGK 3692 TR65IX Iridium IX

 

2008 2009 2010 2011 2012 Mazda 3 Spark Plugs

Info/Engine 2.5L MZR engine 2.0L MZR engine
OEM spark plug gap 0.052″ (1.32mm) 0.052″ (1.32mm)
Qty. needed 4 4
Change interval 75,000 miles 75,000 miles
Best spark plug NGK 90083 LTR5BI-13 Laser Iridium NGK 90083 LTR5BI-13 Laser Iridium
Popular choice NGK 4344 LTR5IX-11 Iridium IX Spark Plug Bosch 96302 HR8MII33V 0242230612 Double Iridium Spark Plug with a preset gap

 

2013 2014 2015 2016 2017 2018 Mazda 3 Spark Plugs

Info/Engine 2.5 L SkyActiv-G engine 2.0 L SkyActiv-G engine
OEM spark plug gap Gap: 0.044″ (1.11mm) Gap: 0.044″ (1.11mm)
Qty. needed 4 4
Change interval 75,000 miles 75,000 miles
Best spark plug Genuine Mazda PE5R-18-110 Iridium Bosch 9621 VR7NII33X 0242135529 Double Iridium with a preset gap
Popular choice NGK 93501 LKAR7BIX-11S Iridium IX NGK 93501 LKAR7BIX-11S Iridium IX

 

2019 2020 2021 Mazda 3 Spark Plugs

Info/Engine 2.5 L SkyActiv-G engine 2.0 L SkyActiv-G engine
OEM spark plug gap Gap: 0.044″ (1.11mm) Gap: 0.044″ (1.11mm)
Qty. needed 4 4
Change interval 75,000 miles 75,000 miles
Best spark plug Genuine Mazda PE5R-18-110 Iridium Genuine Mazda PE5R-18-110 Iridium
Popular choice NGK 93501 LKAR7BIX-11S Iridium IX NGK 93501 LKAR7BIX-11S Iridium IX

 

After overcoming 200 thousand km, the likelihood of the need to replace the turbocharger compressor and exhaust gas recirculation valve increases. In the same time period, serious problems with the components of the lubrication system are likely. The throughput of the oil intake decreases, which led to a shortage of oil in the system and forced wear of the internal combustion engine.

The passage of exhaust gases through worn injector washers leads to the formation of carbon deposits, which also does not contribute to maintaining the required operational characteristics.

There are often cases of floating speed and temporary loss of power during acceleration due to inadequate operation of the injection pump valves. Such symptoms can be a harbinger of high-pressure pump failure.

Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article - he will be glad to help you anytime.

4 thoughts on “Best Spark Plugs for Mazda 3

  1. bernie tabaosares says:

    why there is engine light on my dashboard? does the water pump has something to do with it? because one time the water coolant was not put inorder and i run more than a hundred miles by the time i check my hood that the coolant was not return inplace.

  2. bernie tabaosares says:

    my car is mazda 3 skyactive engine. do decarbonization required on my car because the engine light is ON on my dashboard? is it the spark plug? according to the technician based on his computer diagnose the number 4 chamber having miss fire. i have my car under pms and still engine light still on at my dashboard. what shall i do?

    1. Dan Hoffman says:

      You can turn off the check engine light by disconnecting and then reconnecting your car’s battery.
      Change your oil regularly and use good gasoline.
      I give 99% you do not need carbon cleaning. To confirm/refute this you have to look inside the engine.
      Try to replace the #4 spark plug.

  3. Sir, good day to you. I have a Mazda 3 with a Bk engine. It’s 15 years old. What is the best recommended engine oil should I use, please and thanks.

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