To gain room to work under the vehicle, raise it using ramps or a jack and jack stands. I prefer ramps because they save time, but either will work.

Pull the lever on the driver's side kick panel to release the hood latch.

Open the hood by pushing the yellow latch lever to the side.

There is a large panel covering the bottom of the engine. This panel protects the engine from debris, reduces engine noise, helps aerodynamics and gas mileage.

It's held on with a 2 types of screws. First is a set of 2 x 7mm hex screws on each side near the wheels. Then there are 7 x T-30 torx screws that attach the front and rear corners.

Remove all of these screws and pull the panel forward to remove it.

Place an oil catch container under the oil drain plug located at the rear of the oil pan.

Remember, pictured is the 2.0L Ecoboost. The 1.6 can be seen in this Fiesta ST Article.

Loosen the oil drain plug using a 15mm hex socket for the 2.0L and 2.5L or a 13mm for the 1.6. Oil will pour out once it's removed.

Wait for the oil to drain and replace the drain plug. The torque rating is 20lb-ft.

Slide your oil drain container under the oil filter.

Using your oil filter wrench, remove the oil filter by turning it counter-clock wise, just like most screws.

Some oil will drain down the sides as you remove it.

Clean the oil filter gasket surface on the engine, making sure there is no gasket or debris remaining.

Prepare the new oil filter by pre-filling it with oil and smearing a small amount of oil on the gasket surface.

Screw on the new oil filter, tightening to spec, which is usually hand tight plus 1/4 - 3/4 turn.

Remove the oil fill cap and insert a clean funnel.

Pour the required oil into the engine. You may wish to stop 1 quart or so short to make sure you don't over-fill. If so, keep re-checking the oil level and adding more oil as needed.

Check the oil level by pulling the dip stick, wiping it clean, and re-inserting it into the engine. The dip stick has high and low level marks, you want it between the two marks.

Keep in mind, if you have the vehicle on an incline, this reading may be slightly off, and should be re-checked on a flat surface if possible.

Once the oil filter, drain plug, and oil have all been installed properly, start up the engine for a few seconds to get the oil moving under pressure.

Shut the engine off, and check the filter, and drain for any leaks indicating you forgot to tighten something properly.

Reinstall the under engine panel. Remember there are 2 x 8mm hex screws and 7 x T30 Torx screws.

Remove the vehicle from the ramps or jack stands.

Once the vehicle is level, re-check the oil level to see if you need to add any more oil.

Press the on button without pressing the brake pedal to turn on the dash without starting the engine.

Wait for the dash information screen to start up.

Press and hold the brake and gas pedal for about 20 seconds. Again, make sure the vehicle isn't running.

The info screen will inform you that an oil reset is in progress. Keep holding the pedals down.

The screen will update to say "Oil Reset Complete".

You're Done.