Gunk
Brand Score B-5 products · 3 categories · Avg 4.26★ · 990 reviews
Price range $9 – $53
Last analyzed: June 21, 2026
Browse products ↓Quick Take on Gunk
Score: B-- •Most products (80%) hit the 4-star mark — dependable across the board
- •Focused on windshield washer fluids, where it averages 3.85★
- •Priced below the category average — verify individual specs match your needs before buying
- •A narrow lineup (3 categories) — limited options if you want range
Gunk Niteo Motor Medic M4011/12 DOT 5 Brake Fluid
4.6★ with 213 reviews — top-rated in brake fluids
Brand Score: B-
B- in windshield washer fluids — Gunk's 5 products average 4.26★ across 3 categories, with windshield washer fluids as the strongest line (3.85★ avg).
Gunk earns a Brand Score of B- on Mubboo, based on analysis of 5 products across 3 categories. Value positioning (100/100) is the brand's strongest dimension. Category depth (38/100) is the area with the most room for improvement. Gunk's primary strength is in windshield washer fluids, where it averages 3.85★.
How we calculate Brand Score
Quality Consistency (40%): percentage of products rated 4+ stars
Market Presence (25%): total review volume, log-scaled
Value Positioning (20%): average price vs category average
Category Depth (15%): number of active product categories
Based on 5 Gunk products available to US shoppers · last analyzed June 21, 2026.
How Gunk Compares
Gunk | Most Popular Prestone | Highest Rated Rain-X | Best Value CarPlan | |
|---|---|---|---|---|
| Avg Rating | 4.26★ | 4.51★ | 4.59★ | 4.5★ |
| Total Reviews | 990 | 19,575 | 16,726 | 11,117 |
| Avg Price | $22 | $31 | $31 | $14 |
| Brand Score | B- | B+ | B+ | B+ |
Show more details
| Products | 5 | 11 | 12 | 3 |
| Quality Rate | 80% | 100% | 100% | 100% |
| Categories | 3 | 1 | 1 | 1 |
Gunk
Avg Rating: 4.26★
Reviews: 990
Avg Price: $22
80% rated 4+★
Our Top 3 from Gunk
Gunk Niteo Motor Medic M4011/12 DOT 5 Brake Fluid
4.6★ with 213 reviews — top-rated in brake fluids
Gunk Motor Medic C1412 10-Minute Radiator Flush
4.5★ with 192 reviews — top-rated in flushes
Gunk M506-24PK Concentrated Windshield Washer Solvent
4.1★ with 383 reviews — a solid choice in windshield washer fluids
Where Gunk Is Strongest
windshield washer fluids
brake fluids
What You'll Spend on Gunk
Most Gunk products fall between $9 and $53.
Gunk sits below the category average on price — a value-focused brand. Check individual specs to confirm fit.
Where to Buy Gunk
Gunk products are available on Amazon — 5 products across 3 categories.
Browse Gunk on Amazon →Brand Bottom Line
- Brand Score
- B-
- Best Product
- Niteo Motor Medic M4011/12 DOT 5 Brake Fluid ($17) Buy on Amazon →
- Price Level
- Budget — below category average
- Quality
- 80% of products rated 4+★
- Best For
- Shoppers comparing options within windshield washer fluids
- Alternatives
- Prestone (Score B+) · Rain-X (Score B+)
Gunk is a solid choice in windshield washer fluids, with a few standouts worth a look. Start with the Niteo Motor Medic M4011/12 DOT 5 Brake Fluid.
Frequently Asked Questions
Is Gunk a good brand?
Gunk earns a Brand Score of B- on Mubboo. 80% of its 5 products are rated 4 stars or above, which puts it in the reliable range in windshield washer fluids. The main consideration is pricing — Gunk products average $22, $10 below the category average.
What is the best Gunk product to buy?
Based on 213 reviews and a Mubboo Score of A+, the Niteo Motor Medic M4011/12 DOT 5 Brake Fluid ($17) is Gunk's top pick. For a budget option, the Motor Medic C1412 10-Minute Radiator Flush ($9) delivers 4.5★ at 46% of the cost.
Is Gunk worth the premium price?
Gunk prices close to the category average ($22 vs $33), so you're not paying a brand premium.
Gunk vs Prestone: which is better?
Gunk scores B- vs Prestone's B+. Gunk trails slightly on rating (4.26★ vs 4.51★), while Prestone has more total reviews (20K vs 990).
Sources & References
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