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Sosbabe

Fuel economy 2.0t AWD 12mpg

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My mom got a 60 mile brand new off the show floor Mrz 2020 2.0t awd and she only drives about 3 miles a day for work. 
We tried 87 and 93 nothing works.

the highest mpg we had was 14 

Any thoughts? 

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13 hours ago, Sosbabe said:

My mom got a 60 mile brand new off the show floor Mrz 2020 2.0t awd and she only drives about 3 miles a day for work. 
We tried 87 and 93 nothing works.

the highest mpg we had was 14 

Any thoughts? 

 

Hi Sosbabe. Driving 3 miles to work is among the worst possible scenarios for fuel mileage. The car is not even warmed up by the time she gets to work and shuts it off. Then the same thing occurs on her drive home.

 

The only way to accurately measure fuel mileage is to drive it on longer drives and measure over several tankfuls.

 

And do not waste your money on premium/93 octane fuels. While premium will give more horsepower, they will do little to nothing for fuel mileage...and certainly not enough to justify the substantially higher price.

 

Unless your mother is interested in horsepower, 87 octane is your best bet for the money.

 

Also, the "Forum Help and Suggestions" sub-forum is for issues and questions concerning the Lincoln MKZ Forum itself. Therefore, your question will be moved to the "General Engine, Powertrain & Transmission" sub-forum.

 

Good luck.

Edited by bbf2530

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Bbf2530 is right on the money.  In driving 3 miles to work, depending on traffic and weather,  the car may never reach full operating temperature and is operating in "open loop" status for longer than necessary for optimum fuel mileage.   In addition, it needs to get at least 2000 break-in miles accumulated before even bothering to calculate MPGs.  The owner's guide is clear on this:

Quote
Fuel Economy
 
Your vehicle calculates fuel economy figures through the trip computer average fuel function.   See   General Information
The first 1000 mi (1,500 km) of driving is the break-in period of the engine. A more accurate measurement is obtained after 2000 mi (3,000 km).

Moreover,  if this is going to be the way the car is used, it's never going to break in properly.  It has to be driven at varying speeds to get the piston rings to seat properly.  This will ensure that there is minimal oil consumption in the future and that all the moving parts in the engine "mate" properly with each other.  Again, the OG:

Quote
Breaking-In

...Vary your speed frequently and change up through the gears early. Do not labor the engine.

If this is going to be the primary way the car is going to be used, it sounds like a Hybrid or even a BEV would have been a more appropriate choice for your mom.

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Agreed. Plan a short road trip on roads with varying speeds to properly break in the car.  After that,  expect 16-18 mpg in the city. That's about what I get.  Highway mileage is much better at 28mpg.

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