Chick-fil-A's drive-thru service is among the slowest in a new survey — here's how 10 major chains rank

• Dunkin' has the fastest drive-thru wait times and Chick-fil-A has the slowest, according to a new study by QSR Magazine. 
• The study analyzed wait times from drive-thru speakers to order windows at 10 major fast-food chains.
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Fast-food drive-thru service is getting slower. 

Customers spent an average four minutes and 25 seconds waiting in drive-thru lines in 2019, according to a new study from QSR Magazine. That's about 20 seconds longer than drive-thru wait times in 2018. 

The study analyzed wait times from drive-thru speakers to order windows at 10 major fast-food chains.

Here's how the chains ranked from slowest to fastest.

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Chick-fil-A

Wait time: 322.98 seconds

McDonald's

Wait time: 284.05 seconds

Hardee's

Wait time: 266.34 seconds

Arby's

Wait time: 263.46 seconds

KFC

Wait time: 243.73 seconds

Carl's Jr.

Wait time: 240.51 seconds

Taco Bell

Wait time: 240.38 seconds

Burger King

Wait time: 235.48 seconds

Wendy's

Wait time: 230.38 seconds

Dunkin'

Wait time: 216.75 seconds