Mazda Forum - Mazda Enthusiast Forums - Really poor fuel consumption

Quote:

Originally Posted by Spetz (Post 86995)

I don't think my warm up periods are extremely long.
Ok, once in a while when I start the car and then need to go do something it'll be about 5-7 mins but usually 2 mins is all I wait.

According to the Owner's Manual of every car I've ever owned, (which includes Mazdas, VWs and BMWs), you should not allow the engine to warm up for more than a few seconds.

Per the Owner's Manual of my Mazda3:
- "Avoid long warm-ups. Once the engine runs smoothly, begin driving."
- "After starting the engine, let it idle for about 10 seconds."

Per the Owner's Manual of my 530i:
- "Do not allow the engine to warm up by leaving it running while the vehicle remains stationary. Instead, begin to drive immediately at a moderate engine speed."

Quote:

Originally Posted by Spetz (Post 86995)

I heard it takes about 1 minute to completely lubricate the whole engine from start up but I don't have expert knowledge to back it up.

You've been given some bad advice, all it takes is a few seconds.

Quote:

Originally Posted by Spetz (Post 86995)

Maybe though the USDM Mazda 3 is different to the EU spec Mazda 3? American cars usually have larger seats (average American is overweight) and have softer suspension (comfort over handling I guess) and also have different emission levels.
So, I suspect that maybe the CR is different and the EU Mazdas are designed for higher octane fuel

There are a few differences, but nothing so extreme as what you're suggesting.

Quote:

Originally Posted by Spetz (Post 86995)

I have however filled up on 95 the last tank and I will see how it goes ;)

Cool, keep us posted.