Coupons.
No fine-print games.
We don’t mark prices up so we can mark them back down. These are real deals on real work. Show the code on your phone at the counter, or mention it when you call.
- 1Pick a coupon below.
- 2Call us or stop by the shop.
- 3Mention the code — discount applied at checkout.
New here? Take $20 off your first repair.
First-time visitors get $20 off any repair over $100, plus a free 20-point vehicle inspection. Welcome to Fenkell — we’re glad you stopped in.
- Valid on any service over $100
- Free 20-point inspection included
- First-time customers only
- Mention the code or show this page at the counter
Pick the one
that fits.
One coupon per visit, please. Call ahead and we’ll have the paperwork ready when you pull in.
$10 off any oil change.
Conventional, synthetic blend, or full synthetic. Includes a free 20-point inspection while you wait.
- Walk-ins welcome
- Most cars done in 30 minutes
- Includes 20-point inspection
- Cannot combine with other offers
15% off brake pads & rotors.
Front, rear, or all four. Premium ceramic or semi-metallic pads. We show you the parts coming off before we put new ones on.
- Premium pads + rotor service
- Free brake inspection
- Same-day on most vehicles
- Excludes labor on heavy-duty trucks
Free exhaust system inspection.
We pull your vehicle on the lift and walk you through every joint and weld. Quote on the spot if work is needed.
- Visual + leak-detection inspection
- Custom-pipe quote on the spot
- No pressure to book the work
- Walk-ins welcome
Memorial Day weekend: $79 cooling system flush.
Beat the Detroit summer. Coolant flush, radiator pressure test, and cap inspection — all-in for one price.
- Coolant flush + fresh fill
- Radiator pressure test
- Cap and hose inspection
- Most vehicles — call for diesel/heavy-duty
- One coupon per customer, per visit. Cannot combine multiple coupons on the same invoice.
- Mention the coupon code before service begins — we can’t apply discounts after the work is done.
- Coupons apply to labor + parts at our retail price. Shop supplies, disposal, and taxes are not discounted.
- Not valid with insurance, warranty, or fleet pricing.
- Detroit Express Muffler reserves the right to modify or discontinue offers without notice.
Call before you come in — we'll lock the price.
Tell us the coupon and your vehicle. We'll confirm the work fits and have you in and out fast.