Oil change service · Vernon Hills, IL · reviewed since 2015
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%88+48Reliability 24%88+21.3Value 14%93+13.2Replies to reviews 7%78+5.5Craft & service penalty95−0.5Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.88SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#103 of 218 auto repair shopsiPosition by Experts Score among all companies we track in this category. · better than 53%
4.9★★★★★2,041 Google reviews
93%five-star reviews
4.90★last 12 monthsiAverage stars on reviews from the last 12 months only.
1.6%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Reviewers consistently highlight the facility's speed, noting that customers are often in and out within thirty minutes. Staff are frequently described as knowledgeable, friendly, and honest, with many praising the lack of pressure to purchase additional services. However, lower-rated feedback cites concerns about pricing, including unnotified cost increases and charges for unauthorized add-ons. Some customers also reported issues with communication, such as persistent text messages, and specific service delays or mechanical errors.
Google rating: 4.9 out of 5 from 2,041 reviews (93% five-star).
Reviews on this page: 2,041 Google reviews (1,277 with written comments, 16 with photos).
Owner responses: the business replied to 60% of reviews.
Most recent review: October 30, 2026.
Service: Auto Repair Shop serving Vernon Hills, Illinois.
Data from Google, last updated October 31, 2026.
Score profile vs other auto repair shops
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and craft & service; weakest: replies to reviews.
Grease MonkeyAuto Repair Shops median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Grease Monkey: 88/100 on this factor. Category median: 90.A
88
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Grease Monkey: 88/100 on this factor. Category median: 87.A
88
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Grease Monkey: 95/100 on this factor. Category median: 100.A
95
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Grease Monkey: 93/100 on this factor. Category median: 100.A
93
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Grease Monkey: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Grease Monkey: 78/100 on this factor. Category median: 61.B
78
Bar = this company · dark tick = category median.
Star ratings
2,041 Google reviews we collected
4.9of 5
5 stars1,89193%
4 stars884%
3 stars231%
2 stars40%
1 star352%
Praise vs complaints
Phrases our text analysis found in 1,277 written reviews
98%praise
Praise1,91198%
Complaints472%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
95%fair
Great price11532%
Reasonable22562%
Overpriced175%
Not sure82%
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude64533%
Speed & response45723%
Quality & results37319%
Honesty & trust1538%
Would recommend1437%
Price & value1186%
Communication694%
What customers talk about
We read 1,277 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“The team at Grease Monkey is well-trained, knowledgeable and always exhibits a positive spirit!”
“Very unprofessional, I will look for another oil change provider from now on.”
“Always busy but they work fast and you spend no more than half hour there.”
“I cannot prove this but, I got my oil changed here in February and a month ago I noticed drops of oil under my car then turned into a slow stream.”
“I always receive great service at this location and they are always so quick and efficient.”
“Horrible service firsr of the young lady who was the tech looked lost and she was busy in her phone instead of doing her job.”
“They’re consistently friendly, honest, respectful, and very knowledgeable in what they do.”
“This place is a scam, it doesn’t even deserve a one star.”
“Would definitely recommend “Grease Monkey” #201 to my neighbors!”
“I was recommended by my sister but inwill never return or recommend this place.”
“Even with the $15 coupon it wasn’t cheap (~$106), but the time savings compared to waiting at the dealer are worth it.”
“When I asked why it was so expensive, the only explanation I received was, “Prices went up.”
“Very helpful, not pushy, explained upcoming suggestions but didn’t try to push me to do it now.”
People customers mention
Mundelein65 reviews
Scott53 reviews
Nate16 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Grease Monkey for 8 kinds of job. Pick one to see what they paid and said.
Ssusan10 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 22 hours ago★★★★★
I had very professional service. It was well explained. Would definitely recommend “Grease Monkey” #201 to my neighbors!
Oil changeService not listed
BBoris4 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 4 days ago★★★★★
Good shop. Always busy but they work fast and you spend no more than half hour there.
Reasonable priceOil change
DDanielle7 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 4 days ago★★★★★
I always receive great service at this location and they are always so quick and efficient.
Great price
JJon12 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited 4 days ago★★★★★
Just had an oil change and thorough check up on my 2018 VW Tiguan. The team at Grease Monkey is well-trained, knowledgeable and always exhibits a positive spirit! Hats off to Scott and his Grease Monkey team!!
Reasonable priceTiresBatteryOil change
JJames5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 4 days ago★★★★★
My tire light as on my dash panel and went to Grease monkey for help the filled my tires but the light was still on until Manager Scott knew what to do, he said in order for the light to go out you need to fill even the spare tire since it wasn’t s donut but the same tire are the 4 on my truck and sure enough the…
MMichelle3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★
I was especially pleased the assistant manager gave me a website to use for ordering a new head light. Plus he was very friendly & professional.
I had very professional service. It was well explained. Would definitely recommend “Grease Monkey” #201 to my neighbors!
Services: Oil change, Service not listed
Service duration: 30–60 min
Response from the owner · a year ago
Your recommendation means so much to us and we're so happy to have earned it, Susan. Thank you again for taking the time to let the world know about your positive experience. Thank you, and have a fantastic day!
M
Michael SawitzLocal Guide · 30 reviewsiTotal number of Google reviews Michael has written across all businesses on Google Maps, not just this one.
Just had an oil change and thorough check up on my 2018 VW Tiguan. The team at Grease Monkey is well-trained, knowledgeable and always exhibits a positive spirit! Hats off to Scott and his Grease Monkey team!!
Price assessment: Reasonable price
Services: Tires, Battery, Oil change
Response from the owner · a year ago
Thank you so much for this review, Jon! It is always nice to be recognized for the great service that we strive for with each visit. Thanks for your business, and we look forward to your next visit!
J
James Zazas5 reviewsiTotal number of Google reviews James has written across all businesses on Google Maps, not just this one.
My tire light as on my dash panel and went to Grease monkey for help the filled my tires but the light was still on until Manager Scott knew what to do, he said in order for the light to go out you need to fill even the spare tire since it wasn’t s donut but the same tire are the 4 on my truck and sure enough the light went off. Never knew that the light was off and Scott taught me something I won’t forget.
It’s why I keep coming back to them, they treat my car like it their own car. Custmer Service is the best!
C
Chris Brown4 reviewsiTotal number of Google reviews Chris has written across all businesses on Google Maps, not just this one.
Great service. Quick and professional without any haggling or pressure.
Price assessment: Reasonable price
Services: Oil change
Service duration: 0–30 min
Response from the owner · 4 days ago
Hello Chris, thanks for taking the time to leave a review! We're glad our team provided fast, pressure-free service. Drop by again anytime you need quick auto care!
M
Michelle Mullendore3 reviewsiTotal number of Google reviews Michelle has written across all businesses on Google Maps, not just this one.
I was especially pleased the assistant manager gave me a website to use for ordering a new head light. Plus he was very friendly & professional.
Price assessment: Reasonable price
Services: Oil change
Service duration: 0–30 min
Response from the owner · a week ago
Our team strives to deliver an excellent experience, and are glad you found this to be the case during your visit, Michelle. Thank you for your business, and we look forward to seeing you again.
M
Mary Wietzema2 reviewsiTotal number of Google reviews Mary has written across all businesses on Google Maps, not just this one.
Thank you for shining the spotlight on our teams’ service and expertise! We appreciate the feedback and will make sure to thank them for a job well done. Thank you for your business, Mary! We look forward to seeing you again.
M
mara cooper11 reviewsiTotal number of Google reviews mara has written across all businesses on Google Maps, not just this one.
Services: Air & cabin filter replacement, Oil change
Service duration: 0–30 min
Response from the owner · a week ago
Hello Mara, combining speed with informative guidance is what our team strives for every day! Thank you for the positive review, and we look forward to your next visit.
