What is a good OEE score?

As a rule of thumb, an OEE of 85% is world-class for discrete manufacturing, around 60% is typical, and below 40% there is usually a lot of room to improve. But these numbers are guidelines, not targets carved in stone - what counts as “good” depends on your process, your industry, and how honestly you define planned time.

The benchmark numbers

• 100% OEE - perfect production: only good parts, as fast as possible, no stops. A ceiling, not a goal.
• 85% OEE - the widely cited world-class benchmark for discrete manufacturers.
• 60% OEE - fairly typical, and a sign there's meaningful loss to recover.
• 40% OEE - common for plants just starting to measure; usually improvable quickly once losses are visible.

Why a single benchmark can mislead

Comparing your OEE to someone else's is risky, because the same percentage can mean very different things:

• Process type matters. A continuous process line and a high-mix job shop with constant changeovers shouldn't be held to the same OEE.
• Planned time is a choice. Exclude more time as “unscheduled” and your availability - and OEE - rises without anything improving on the floor. This is why a consistent definition matters more than the headline number.
• OEE ignores unscheduled time. A line at 85% OEE running one shift a day may be a worse use of capital than a 65% line running flat out. That gap is what TEEP measures.

Track the trend, not the trophy

The most useful way to read OEE is against yourself, over time. A line that moves from 55% to 68% has recovered real capacity, whatever the absolute number. Set your own baseline honestly (see how to calculate OEE), watch the trend, and let the factor breakdown tell you which loss to attack next.

Whatever your starting point, the path up is the same: measure honestly, find the vital few causes, and remove the biggest losses first.