Castrol
Brand Score A-18 products · 1 categories · Avg 4.81★ · 79,735 reviews
Price range $21 – $39
Last analyzed: June 5, 2026
Browse products ↓Quick Take on Castrol
Score: A-- •Only 0% of products fall below 4 stars — rare misses across the lineup
- •80K buyer reviews across the lineup — a well-established track record
- •A specialist in Motor Oil (4.81★ average) rather than a generalist
- •Priced below the category average — verify individual specs match your needs before buying
- •A narrow lineup (1 category) — limited options if you want range
Castrol GTX Full Synthetic 5W-20 Motor Oil
4.9★ with 2K reviews — top-rated in Motor Oil
Brand Score: A-
A- in Motor Oil — Castrol's 18 products average 4.81★ across 1 category, with Motor Oil as the strongest line (4.81★ avg).
Castrol earns a Brand Score of A- on Mubboo, based on analysis of 18 products across 1 category. Quality consistency (100/100) is the brand's strongest dimension, with 100% of products rated 4 stars or above. Category depth (13/100) is the area with the most room for improvement. Castrol's primary strength is in Motor Oil, where it averages 4.81★.
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 18 Castrol products · last analyzed June 5, 2026.
How Castrol Compares
Castrol | Most Popular Valvoline | Highest Rated Motul | Best Value Pennzoil | |
|---|---|---|---|---|
| Avg Rating | 4.81★ | 4.73★ | 4.9★ | 4.82★ |
| Total Reviews | 79,735 | 70,159 | 12,554 | 23,612 |
| Avg Price | $26 | $21 | $63 | $30 |
| Brand Score | A- | A- | B- | B+ |
Show more details
| Products | 18 | 8 | 3 | 6 |
| Quality Rate | 100% | 100% | 100% | 100% |
| Categories | 1 | 1 | 1 | 1 |
Castrol
Avg Rating: 4.81★
Reviews: 79,735
Avg Price: $26
100% rated 4+★
Our Top 3 from Castrol
Castrol GTX Full Synthetic 5W-20 Motor Oil
4.9★ with 2K reviews — top-rated in Motor Oil
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil
4.8★ with 8.4K reviews — top-rated in Motor Oil
Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil
4.8★ with 13K reviews — top-rated in Motor Oil
Where Castrol Is Strongest
Motor Oil
View all →
What You'll Spend on Castrol
Most Castrol products fall between $21 and $39.
Castrol sits below the category average on price — a value-focused brand. Check individual specs to confirm fit.
What People Say About Castrol
Aggregated from review themes across 18 Castrol products.
- Improved engine smoothness and quietness
- Good value and competitive price
- Dependable and reliable performance
- Inconvenient eco-pack packaging
- No rebate eligibility on Amazon
Where to Buy Castrol
Castrol products are available on Amazon — 18 products across 1 categories.
Browse Castrol on Amazon →Featured in Our Reviews
Brand Bottom Line
- Brand Score
- A-
- Best Product
- GTX Full Synthetic 5W-20 Motor Oil ($24) Buy on Amazon →
- Price Level
- Budget — below category average
- Quality
- 100% of products rated 4+★
- Best For
- Value-focused buyers who still want reliability
- Alternatives
- Valvoline (Score A-) · Motul (Score B-)
Consistent ratings and fair prices make Castrol a low-risk pick. Start with the GTX Full Synthetic 5W-20 Motor Oil.
Frequently Asked Questions
Is Castrol a good brand?
Castrol earns a Brand Score of A- on Mubboo. 100% of its 18 products are rated 4 stars or above, which puts it among the most consistent brands in Motor Oil. The main consideration is pricing — Castrol products average $26, $6 below the category average.
What is the best Castrol product to buy?
Based on 2K reviews and a Mubboo Score of A+, the GTX Full Synthetic 5W-20 Motor Oil ($24) is Castrol's top pick. For a budget option, the GTX High Mileage 5W-30 Synthetic Blend Motor Oil ($21) delivers 4.8★ at 12% of the cost.
Is Castrol worth the premium price?
Castrol prices close to the category average ($26 vs $32), so you're not paying a brand premium.
Castrol vs Valvoline: which is better?
Castrol scores A- vs Valvoline's A-. Castrol edges ahead on average rating (4.81★ vs 4.73★), while Valvoline has fewer total reviews (70K vs 80K).
Sources & References
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Brand Score, product rankings, or editorial judgments.