OEE & manufacturing downtime statistics (2026)

The most-cited, source-traced figures on OEE, downtime cost and Industry 4.0 adoption — each tied to a named primary source.

85%

World-class OEE — the benchmark Seiichi Nakajima established in foundational TPM work.

Nakajima (1984); Vorne

~60%

Typical OEE for an average plant; Evocon's dataset peaks at 55–60%, with only ~6% of plants reaching 85%.

Evocon customer dataset, 2024

$260K/hr

Average cost of unplanned downtime for large manufacturers across sectors.

Aberdeen Research

$2.3M/hr

Cost of unplanned downtime in automotive manufacturing specifically.

Siemens, True Cost of Downtime 2024

$1.4T/yr

Fortune Global 500 manufacturers' annual losses to unplanned downtime — about 11% of revenue.

Siemens, 2024

$600B/yr

Aggregate unplanned-downtime cost for Global 2000 companies — up ~50% in two years.

Cisco/Splunk, 2026

~800 hrs

Unplanned downtime per year for the average manufacturer — roughly 15 hours a week.

Siemens / Senseye, 2024

42%

Share of unplanned downtime caused by equipment failure; human error accounts for 23%.

Reliabilityweb 2023; Plant Engineering 2022

92%

Executives who agree smart manufacturing will be the main competitiveness driver in three years.

Deloitte, 2025

94%

Respondents who said Industry 4.0 helped keep operations running through the 2020 disruption.

McKinsey, 2020

How to read these numbers

The 85% "world-class" figure dates to 1980s discrete manufacturing; modern targets are sector-specific — see our Benchmarks by Industry. Every figure is reproduced from a primary source under our Editorial process.