How do I judge how often a courier company’s drivers miss delivery windows?

Missed windows hurt a courier twice: customers complain, and the best accounts quietly move to a rival. Ask the owner how on-time performance is measured and who looks at it. Request a few months of delivery data with scheduled and actual times, and look at the pattern rather than the average. Late deliveries clustered on one route or one weekday suggest a fixable cause, while scattered misses may point to a staffing or planning problem.

Then look for the story behind the numbers. Are misses caused by traffic, dispatch errors, overloaded routes, vehicle breakdowns or driver turnover? Ask the dispatcher and a few drivers separately and see if their answers match. Check customer complaints, credits given and any service-level terms in contracts, since those show what a miss costs.

Finally, test the owner’s claims against an outside source. If the seller will allow it, speak with a customer or two. Ask how you would improve the numbers in your first season and what it would cost in vehicles, hours or software. Your lawyer can check driver hour and vehicle rules that affect how routes are planned. Ride along on a route for a day if the seller agrees, because you will see the real causes of delay in a way no report shows.

Key takeaways

• Measure promised against actual delivery time by route and driver.
• Ask dispatchers and drivers separately why misses happen.
• Check complaints and credits for the real cost.