Denny's Muffler Center

Shop type

Auto Repair Shops · Muffler & Brake Shops

Address

1501 7th Avenue, Marion, IA 52302

Phone

(319) 373-1251

Website

dennysmuffler.com

Data checked

November 6, 2026 (OpenStreetMap)

Location

Map © OpenStreetMap contributors. Confirm the address before you drive over.

Before You Hire

Typical turnaround is same day to 3 days for most jobs. Ask:

• Can I get a written estimate with parts and labor listed separately before any work starts?
• What is your hourly labor rate, and is there a diagnostic fee? Is it credited toward the repair?
• Will you call me for approval if the job grows beyond the estimate?
• Are your technicians ASE certified in this kind of repair?
• Are the parts new OEM, aftermarket or rebuilt?

All 9 questions to ask →

Tips

• Get a second estimate on any repair over a few hundred dollars.
• Ask whether a diagnostic fee is credited toward the repair if you go ahead.
• Book time with the shop rather than dropping off without notice; good shops are often booked a few days out.

Getting several quotes? Line them up in the quote comparison tool and read what to check on an estimate before you approve work.