Niles, Illinois · On Milwaukee Ave since 1989
You get the price before anyone touches your car.
You have probably been handed a bill bigger than the quote somewhere. Not here. You get the number first, from Andy and an ASE-certified crew, and nothing goes on it that you did not agree to. Walk in — no appointment.
Out of 219 on Google. Thirteen more gave four
Across 219 reviews from our neighbors
Same block of Milwaukee Ave ever since
Walk in any morning we are open
Pull in → pull out
Five things that happen every time
The same order of operations on every car that comes through the door, whether it is a five-quart oil change or a brake job.
You pull in
No booking, no app, no waiting on a slot next Tuesday. Walk in any morning we are open and get in line. If your car arrives on a tow before we unlock, it goes into the queue that same morning.
The look-over
Before you get a number, somebody actually looks at the car. The inspection costs you nothing, and you get told what we found in plain language, straight to the point.
The number, first
You hear what it costs before a wrench moves, and you decide. No upsell, no padded estimate, and nothing on the invoice you did not agree to.
The work
ASE-certified technicians, Castrol oil, and a bay that has been doing fluid changes, brakes, suspension, electrical, A/C and diagnostics on this corner since 1989 — so whatever is wrong with your car has almost certainly come through these doors before.
The honest no
If it is not a job for this shop, we say so and point you at somebody who can do it. You are not going to pay us to find out we cannot help.
The bay
A Castrol shop, not a quick-lube conveyor
Two bays, a lift, oil drains and a wall of filters. The same crew does your oil change and your brakes, so nobody hands you off to a stranger and nobody guesses. Quick when it can be quick, careful when it needs to be careful.
Welcome to Grendel’s
Our services include:
- Fluid changes, belts, and hoses
- Engine diagnostics and emissions repairs
- Brakes, steering, and suspension systems
- Batteries, charging systems, and electrical repairs
- A/C and coolant systems
- Tires, flat repairs, and more
We appreciate your patronage
Oil change to full repair
What we actually do
Rapid service, while you wait
Auto repair, in the bay
Prices are posted on the board above the counter and quoted to you before the work starts — no upsell, no surprise on the invoice.
Inside the shop
What it looks like when you get here
The owner
Andy
Customers do not write about “the shop.” They write about Andy by name, over and over, going back more than fifteen years. He is on the floor, and he is the one who tells you what your car needs before anybody starts on it.
“I can’t say enough about how efficient and honest Andy is. I live in Roselle and have my car towed to this location because Andy is so trustworthy!”
Bob Avvisati · Google · one month ago
219 on Google · 55 on Yelp
Do not take our word for it
What people wrote after they picked their cars up.
“I’m just a girl! Lol one who really needs transparency and integrity when I pull into a mechanics shop with my car problems! Thank you to the team at Grendel’s! Service was elite and I confidently felt my car needs were serviced and addressed with care!”Jasmine Michelle · Google Local Guide · 4 months ago
“So far only went there for oil changes, but I’m very satisfied. Took my wife’s then daughter’s cars two different days. They were able to see me right away both times. Performed the oil changes quickly. Everyone was friendly. Will definitely return and would recommend.”Edward Dowtort · Google · 5 months ago
“Been going here a bit over a year now for oil changes & general car issues. Great service & everyone is always extremely helpful. My car recently had a muffler issue that they weren’t able to repair and they recommended me to a great shop that was able to help that same day. Would highly recommend Grendel’s to anyone.”Darius Toma · Google Local Guide · 6 months ago
“I was visiting the area from out of town. My windshield wiper stopped working right before I was about to make a 3.5 hour trip home in a snowstorm. I had no appointment, but they were super friendly and fixed it right away. I’m very thankful for them!”Jamie Summers · Google · 7 months ago
“I’ve been going to Andy’s (owner) Grendel’s for over 15 years maybe longer, and they always provide the best care! Affordable prices, courtesy, and quick service-I highly recommend this place! Thank you Andy and team!”Marissa · Google Local Guide · a year ago
“Honest and fair, to a t you will not be disappointed Andy and crew mate true professionals”Steve B., Park Ridge · Yelp · May 29, 2026
Hours & address
Come by
| Monday | 8:00 AM – 5:00 PM |
|---|---|
| Tuesday | 8:00 AM – 5:00 PM |
| Wednesday | 8:00 AM – 5:00 PM |
| Thursday | 8:00 AM – 5:00 PM |
| Friday | 8:00 AM – 5:00 PM |
| Saturday | 8:00 AM – 3:00 PM |
| Sunday | Closed |
Grendel’s Rapid Oil Change & Auto Repair
8657 N Milwaukee Ave, Niles, IL 60714
Plus code 25QG+87 Niles · parking in front of the bays
A block from the Niles–Chicago line, minutes from Morton Grove, Park Ridge, Edison Park and Norwood Park, and an easy drop off 294. Serving Niles, Morton Grove, Park Ridge, Des Plaines, Glenview, Edison Park, Norwood Park, Harwood Heights and the Northwest Side.
Before you drive over
The questions we get asked most
Do I need an appointment for an oil change?
How long does an oil change take?
Will you tell me the price before you start?
Do you do more than oil changes?
Are your technicians certified?
What oil do you use?
Can I have my car towed in?
Where exactly are you?
What if it is not a job you can do?
How long have you been on Milwaukee Ave?
Mon–Fri 8 to 5 · Sat 8 to 3
Drive over. No appointment.
Would it be unreasonable to call and ask what your car needs?
8657 N Milwaukee Ave, Niles · (847) 965-0155