Car detailing service · Allouez, WI · reviewed since 2017
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%95+51.8Reliability 24%93+22.5Value 14%100+14.1Replies to reviews 7%44+3.1Craft & service penalty85−1.5Experts Score= 90Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.90SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#26 of 46 car wash servicesiPosition by Experts Score among all companies we track in this category. · better than 44%
4.9★★★★★144 Google reviews · 24 photos
94%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
0%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.
Customers frequently praise the shop for its punctuality, clear communication, and flexible scheduling options, including online payment and key lockers. Services such as Woolwax undercoating, rustproofing, and interior detailing are described as effective for protecting vehicles against Wisconsin winters, with many noting the owner’s willingness to explain processes and offer annual touch-ups. However, lower-rated reviews criticize the business for high pricing on basic services and defensive customer service interactions that overshadow the quality of the work performed.
Google rating: 4.9 out of 5 from 144 reviews (94% five-star).
Reviews on this page: 144 Google reviews (117 with written comments, 17 with photos).
Owner responses: the business replied to 12% of reviews.
Most recent review: October 21, 2026.
Service: Car Wash serving Allouez, Wisconsin.
Data from Google, last updated October 25, 2026.
Score profile vs other car wash services
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: value and momentum; weakest: replies to reviews.
Diamond Dave’s Detailing LLCCar Wash Services 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.Diamond Dave’s Detailing LLC: 95/100 on this factor. Category median: 93.A
95
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.Diamond Dave’s Detailing LLC: 93/100 on this factor. Category median: 92.A
93
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.Diamond Dave’s Detailing LLC: 85/100 on this factor. Category median: 100.A
85
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.Diamond Dave’s Detailing LLC: 100/100 on this factor. Category median: 100.A
100
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.Diamond Dave’s Detailing LLC: 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.Diamond Dave’s Detailing LLC: 44/100 on this factor. Category median: 94.C
44
Bar = this company · dark tick = category median.
Star ratings
144 Google reviews we collected
4.9of 5
5 stars13594%
4 stars53%
3 stars11%
2 stars11%
1 star21%
Praise vs complaints
Phrases our text analysis found in 117 written reviews
98%praise
Praise16698%
Complaints42%
Topic share
How often each topic comes up in the written reviews
7topics
Quality & results6538%
Would recommend2716%
Staff & attitude2615%
Price & value2012%
Speed & response148%
Communication148%
Honesty & trust42%
What customers talk about
We read 117 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Dave did a excellent job on rustproofing my suburban.”
“I highly recommend Diamond Dave’s if you’re looking for quality rustproofing.”
“He did a really nice job with woolwax undercoating.”
“They made the paint look better than it was in the first place and for a reasonable price.”
“Over priced!”
“Effective and efficient as well as reasonably priced.”
“Super easy to deal with, clear communication, and excellent results.”
“It’s great to find someone who takes pride in what they do and genuinely cares about their customer’s vehicles.”
People customers mention
Woolwax5 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Diamond Dave’s Detailing LLC for 8 kinds of job. Pick one to see what they paid and said.
Timothy6 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★★★★★
I made a mistake not getting my last vehicle undercoated. I didn't want to make the same mistake with my new Durango. I'm really glad I found Diamond Dave's. I dropped it off and picked it up the next day . He did a really nice job with woolwax undercoating. I'm so happy with the winter coming up. I plan on coming back every year for touch ups.
TheresaLocal Guide · 11 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. · 2 weeks ago★★★★★
I had my van detailed on the outside. It was quick & very well done. Nice & shiny again. Someone had sideswiped me & Dave was able to buff that out & you can't even tell. Great job!
Lance2 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 month ago★★★★★
Dave did a excellent job on rustproofing my suburban. He did the inside on all my six doors, inner rockers and front and rear quarter panels, also the receiver hitch and full frame. I would recommend diamond Daves!
Isaiah3 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 month ago★★★★★
Great service, great communication!
Very informative and happy to answer all your questions! Highly recommend Diamond Dave's! Our vehicle looks GREAT!
adam2 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 month ago★★★★★
I had my 2017 F150 under coated with Woolwax by Dave. Super easy to deal with, clear communication, and excellent results. He even ran the truck through the wash for me. Could not be happier.
Brandon1 reviewiTotal 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 month ago★★★★★
I have a 2012 Honda Civic with 140,000 miles on it. The engines are pretty solid and can easily reach 300,000 miles, but since we’re in Wisconsin I didn’t think the frame would keep up with the engine. So, I brought the car down to Diamond Dave’s.
Dave did a great job with the Woolwax undercoating, he’s also very…
I made a mistake not getting my last vehicle undercoated. I didn't want to make the same mistake with my new Durango. I'm really glad I found Diamond Dave's. I dropped it off and picked it up the next day . He did a really nice job with woolwax undercoating. I'm so happy with the winter coming up. I plan on coming back every year for touch ups.
Theresa ReyndersLocal Guide · 11 reviewsiTotal number of Google reviews Theresa has written across all businesses on Google Maps, not just this one.
I had my van detailed on the outside. It was quick & very well done. Nice & shiny again. Someone had sideswiped me & Dave was able to buff that out & you can't even tell. Great job!
Lance Buss2 reviewsiTotal number of Google reviews Lance has written across all businesses on Google Maps, not just this one.
Dave did a excellent job on rustproofing my suburban. He did the inside on all my six doors, inner rockers and front and rear quarter panels, also the receiver hitch and full frame. I would recommend diamond Daves!
Isaiah Spice3 reviewsiTotal number of Google reviews Isaiah has written across all businesses on Google Maps, not just this one.
I had my 2017 F150 under coated with Woolwax by Dave. Super easy to deal with, clear communication, and excellent results. He even ran the truck through the wash for me. Could not be happier.
Brandon Kernan1 reviewiTotal number of Google reviews Brandon has written across all businesses on Google Maps, not just this one.
I have a 2012 Honda Civic with 140,000 miles on it. The engines are pretty solid and can easily reach 300,000 miles, but since we’re in Wisconsin I didn’t think the frame would keep up with the engine. So, I brought the car down to Diamond Dave’s.
Dave did a great job with the Woolwax undercoating, he’s also very flexible for people with busy schedules. Dave has a key locker so you can pay online and pick up your vehicle during after hours.
My Civic is 14 years old now, thanks to Dave it might last another 14 years!
Thanks again Dave!
Gary Vanevenhoven1 reviewiTotal number of Google reviews Gary has written across all businesses on Google Maps, not just this one.
Extremely happy with the job Dave did on rust proofing my GMC truck. I was very impressed with the way he coated the frame yet didn’t coat components that did not require coating. Highly recommended Dave.
Tiffany Weckwerth5 reviewsiTotal number of Google reviews Tiffany has written across all businesses on Google Maps, not just this one.
Amazing work on both the rustproofing and ceramic coating. Very particular about my truck. Very happy I choose Diamond Daves to do the job. Would highly recommend Dave and his services
