Analyzing 5,760,1035.8M ReviewsFor 15,83615.8K Experts

1 For All Smog logo

1 For All Smog

Smog inspection station · Vallejo, CA · reviewed since 2020

How 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%93+50.7Reliability 24%94+22.8Value 14%93+13.2Replies to reviews 7%68+4.8Craft & service penalty99−0.1Experts Score= 91Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.91SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#13 of 35 well inspectorsPosition by Experts Score among all companies we track in this category. · better than 65%
4.9 ★★★★★ 118 Google reviews · 24 photos
95%five-star reviews
4.96★last 12 monthsAverage stars on reviews from the last 12 months only.
0%1–2★ in 2 yearsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
42%reviews answered by the owner
Oct 2026latest review
📞 Call (707) 552-9909Request a call back

1 For All Smog at a glance

Google reviewers rate 1 For All Smog 4.9 out of 5 based on 118 reviews. Customers frequently describe the staff as friendly, honest, and knowledgeable, noting that the facility offers quick, efficient smog inspections and registration services at reasonable prices. While most experiences are positive, a small number of low-star reviews mention receiving incorrect information, though the owner responded to 42 percent of the total feedback.

  • Google rating: 4.9 out of 5 from 118 reviews (95% five-star).
  • Reviews on this page: 118 Google reviews (93 with written comments, 4 with photos).
  • Owner responses: the business replied to 42% of reviews.
  • Most recent review: October 15, 2026.
  • Service: Well Inspector serving Vallejo, California.

Data from Google, last updated October 26, 2026.

Score profile vs other well inspectors

Score per factor (100 = best)Each 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.

Satisfaction93Reliability94Craft & service99Value93Momentum100Replies to reviews68Satisfaction: 93 (median 90)Reliability: 94 (median 88)Craft & service: 99 (median 97)Value: 93 (median 100)Momentum: 100 (median 100)Replies to reviews: 68 (median 82)
1 For All SmogWell Inspectors median0 = centre, 100 = best
SatisfactionSatisfaction · 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★ = 100.1 For All Smog: 93/100 on this factor. Category median: 90.A
93
ReliabilityReliability · 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.1 For All Smog: 94/100 on this factor. Category median: 88.A
94
Craft & serviceCraft & 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.1 For All Smog: 99/100 on this factor. Category median: 97.A
99
ValueValue · 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.1 For All Smog: 93/100 on this factor. Category median: 100.A
93
MomentumMomentum · 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.1 For All Smog: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies 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.1 For All Smog: 68/100 on this factor. Category median: 82.B
68

Bar = this company · dark tick = category median.

Star ratings

118 Google reviews we collected

  • 5 stars11295%
  • 4 stars43%
  • 3 stars00%
  • 2 stars11%
  • 1 star11%

Praise vs complaints

Phrases our text analysis found in 93 written reviews

  • Praise14499%
  • Complaints21%

Topic share

How often each topic comes up in the written reviews

  • Speed & response4934%
  • Staff & attitude4531%
  • Would recommend2114%
  • Price & value1410%
  • Quality & results118%
  • Honesty & trust53%
  • Communication11%

What customers talk about

We read 93 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Had a smog test done, the staff was very friendly and the service was quick and efficient.”
  • “Dominic was super helpful - direct, authentic, and super chill.”
  • “10/10 service, once she's ready for the test I will definitely be bringing my car back to them.”
  • “I was charged with a reasonable price point for a smog inspection.”
  • “…car here and she was very friendly and efficient took no time at all great experience and even did all my DMV stuff here as well, would definitely re…”
  • “Honest very professional and knowledgeable in trouble shooting smog diagnostic problems overall clean and friendly environment”
  • “…d me and taken advantage of my naivety, but I was surprised when he explained how the recent work done on my vehicle was becoming costly and perhaps n…”

praise complaint · found by our text analysis, Google review wording unchanged.

Reviews for your job

Customers hired 1 For All Smog for 3 kinds of job. Pick one to see what they paid and said.

Recent reviews

DeAnnah1 reviewTotal 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★★★★★

Had a smog test done, the staff was very friendly and the service was quick and efficient. Will be back!

NikitaLocal Guide · 81 reviewsTotal 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★★★★★

Dominic was super helpful - direct, authentic, and super chill. Good price, attentive service.

MichaelLocal Guide · 15 reviewsTotal 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. · 5 months ago★★★★★

Honest very professional and knowledgeable in trouble shooting smog diagnostic problems overall clean and friendly environment

JamesLocal Guide · 20 reviewsTotal 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. · 6 months ago★★★★★

These guys are awesome. I spoke to one of their employees named Waldo, and he was very honest and upfront about my car likely not passing smog and recommended me a nearby shop that would help. 10/10 service, once she's ready for the test I will definitely be bringing my car back to them. Would recommend this shop to anyone in need of their services

HellN0r31 reviewTotal 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. · 6 months ago★★★★★

Very efficient! Even with 2 people ahead of me, I was in and out within a half hour for my smog check

Irvin3 reviewsTotal 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. · 7 months ago★★★★★

Staff are friendly and service is fast. Will be bringing my other vehicle here for smog and services.

Jobs customers hired them for

JobReviewsCategory typical
Smog certification4—
Change of ownership2—
Emissions testing2—

Compare with

Photos

Customer reviews

4.9 ★★★★★ 118 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Jobs customers hired them for — from Google's service tags and the review text
Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
DeAnnah Thomas1 reviewTotal number of Google reviews DeAnnah has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Had a smog test done, the staff was very friendly and the service was quick and efficient. Will be back!

Nikita BernsteinLocal Guide · 81 reviewsTotal number of Google reviews Nikita has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Dominic was super helpful - direct, authentic, and super chill. Good price, attentive service.

Jason Momon1 reviewTotal number of Google reviews Jason has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great service

Megan F1 reviewTotal number of Google reviews Megan has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Staff were helpful and quick. Reasonably priced.

Michael McNeilLocal Guide · 15 reviewsTotal number of Google reviews Michael has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Honest very professional and knowledgeable in trouble shooting smog diagnostic problems overall clean and friendly environment

David Sisneros1 reviewTotal number of Google reviews David has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Nice people and helpful

Laura Tierrafria Oropeza4 reviewsTotal number of Google reviews Laura has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great place! Took me in quickly! Would recommend!

James RossLocal Guide · 20 reviewsTotal number of Google reviews James has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

These guys are awesome. I spoke to one of their employees named Waldo, and he was very honest and upfront about my car likely not passing smog and recommended me a nearby shop that would help. 10/10 service, once she's ready for the test I will definitely be bringing my car back to them. Would recommend this shop to anyone in need of their services

HellN0r31 reviewTotal number of Google reviews HellN0r3 has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very efficient! Even with 2 people ahead of me, I was in and out within a half hour for my smog check

Irvin Gonzales3 reviewsTotal number of Google reviews Irvin has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Staff are friendly and service is fast. Will be bringing my other vehicle here for smog and services.

1 For All Smog on Google Maps →

Business details

  • Address: 1081 Sonoma Blvd, Vallejo, CA 94590
  • Phone: (707) 552-9909
  • Service area: Vallejo, CA