Octane recommendations

“Regular” unleaded gasoline with a pump (R+M)/2 octane rating of 87 is recommended. Some stations offer fuels posted as “Regular” with an octane rating below 87, particularly in high altitude areas. Fuels with octane levels below 87 are not recommended.

Do not be concerned if your engine sometimes knocks lightly. However, if it knocks heavily under most driving conditions while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage.
See also:
Types of booster seats
There are generally two types of belt-positioning booster seats: backless
and high back. Always use booster seats in conjunction with the vehicle
lap/shoulder belt.
• Backless booster seats
If ...
Four-wheel anti-lock brake system (ABS)
Your vehicle is equipped with an anti-lock braking system (ABS). This
system helps you maintain steering control during emergency stops by
keeping the brakes from locking. The ABS operates by dete ...
Safety
Rare for a new model, the MKX has completed all the major crash tests from
our preferred source, the Insurance Institute for Highway Safety. It has fared
exceptionally well, with Good scores (the ...
