Underseal
MaybeAn estimated 0.5% of orders come back. But shoppers spend an estimated $99K a year here, so Underseal is a Maybe.
- Flapen Score
- 50 / 100Top 43% of 811 Automotive niches · +1 vs the category median of 4950
- Market size
- £99K/yr101K searches / yr
- 90-day growth
- +8.7%search demand this quarter
- Competition
- 57%top-5 click share · 15 brands · 75 sellers
Flapen Score
Underseal against its category
The dotted line is the Automotive average. Past it, Underseal is stronger. Inside it, weaker.
Market
The Underseal market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Underseal 101K times last year and spent an estimated £99K. The top 5 brands take 82% of clicks. Flapen scores it 50 out of 100, a Maybe.
01 · Demand
An estimated 5.8% of those searches ended in a purchase.
Shoppers searched for this 101K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 5.8% of those searches ended in a purchase. Searches in the last 90 days moved +8.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £99K a year.
- Searches, last 12 months
- 101K
- Growth, 90 days vs prior 90
- +8.7%
- Conversion, latest week
- 5.8%
- Market size, estimated
- £99Ka year
- Peak month
- September2.0× the quietest month
- Top search term
- underseal for cars16K searches a year
02 · Price
A sale here is worth £16.88.
Listings sell for £16.88 on average, from £4.39 to £43.88. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 100 to 250 of them. At £16.88 that is £2K to £4K a year per listing.
- Average price
- £16.88inside the $15 to $100 sweet spot
- Price range
- £4.39–£43.88
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 6K–8K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £2K–£4K
- Returns
- 0.5%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
67% of listings pay for placement with sponsored ads. 52% ship with Prime. On an average day, 12.3% of listings are out of stock. The average listing ranks #319 within Car & Motorbike Care. It carries 620 reviews at 4.57 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 52%
- Out of stock, average day
- 12.3%
- Average rank
- #319in Car & Motorbike Care
- Average rating
- 4.57 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 620per listing
- Listings tracked
- 27
04 · Newcomers
0 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 59 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 59 months
Products
Top Underseal products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Hammerite HAM6711408 600ml Underbody Seal Aerosol
- Price
- £8.05
- Rating
- 4.3/5
- Reviews
- 334
- Age
- 17y ago

Hammerite Underbody Seal with Waxoyl. One Coat Rust Inhibitor Rust Converter and Chip Protection for Car Underbod. Metal Paint 500ml Tin
- Price
- £8.01
- Rating
- 4.7/5
- Reviews
- 648
- Age
- 17y ago

Hammerite HAM6711403 1L Underbody Seal Tin
- Price
- £11.66
- Rating
- 4.7/5
- Reviews
- 534
- Age
- 17y ago

Tetroseal Ultimate Underbody Sealant 950g - Protects Against Salt Corrosion Rust Stones & Water | Prolongs Vehicle Life
- Price
- £10.17
- Rating
- 4.4/5
- Reviews
- 187
- Age
- 6y ago

LIQUI MOLY Underseal Bitumen black (Spray) | 500 ml | Body protection | Underbody protection | SKU: 6111
- Price
- £8.54
- Rating
- 4.7/5
- Reviews
- 4,886
- Age
- 13y ago
Trending
estimated 90-day click momentum
Motacare Underseal Spray Heavy Duty Underbody Protection Seal Underguard Paint 500ml (6)
- Price
- £21.36
- Rating
- 4.6/5
- Reviews
- 17
- Age
- 4y ago

Tetroseal Wax/Oil Rustproof Black Aerosol 500ml Heavy-Duty Oils Waxes & Corrosion Inhibitors Kills Rust Silicone-Free For Underbody & Internal Protection
- Price
- £9.36
- Rating
- 4.5/5
- Reviews
- 371
- Age
- 6y ago

Hammerite Underbody Seal with Waxoyl. One Coat Rust Inhibitor Rust Converter and Chip Protection for Car Underbod. Metal Paint 500ml Tin
- Price
- £8.01
- Rating
- 4.7/5
- Reviews
- 648
- Age
- 17y ago

Tetrosyl Tetraschutz Schutz Paint 2 x 1 Litre Bottles Underseal/Underbody/Schutz Protection Can be applied Smooth or Textured Protect your chasis from Rust/Stone Chips
- Price
- £15.16
- Rating
- 4.4/5
- Reviews
- 28
- Age
- 10y ago

LIQUI MOLY Underseal Bitumen black (Spray) | 500 ml | Body protection | Underbody protection | SKU: 6111
- Price
- £8.54
- Rating
- 4.7/5
- Reviews
- 4,886
- Age
- 13y ago
Newest
by launch date
6PCS Underbody Seal Spray Long-Lasting Resilient Layer Easy And Direct Application Resist To Corrosion And Rust Multiple Uses 400ML
- Price
- £24.16
- Rating
- 4.5/5
- Reviews
- 13
- Age
- 12mo ago

2PCS Underbody Seal Spray Long-Lasting Resilient Layer Easy And Direct Application Resist To Corrosion And Rust Multiple Uses 400ML
- Price
- £10.34
- Rating
- 4.8/5
- Reviews
- 6
- Age
- 12mo ago

Pro Range Schutz Paint 5 x 1 Litre Bottle Underseal/Underbody/Schutz Protection Can be applied Smooth or Textured. Protect your chasis from Rust Stone Chips etc
- Price
- £25.31
- Rating
- 4.4/5
- Reviews
- 13
- Age
- 1y ago

JENOLITE Waxoil Rust Prevention & Protection Aerosol Spray | 2x500ml | CLEAR | Waxoil Aerosol Spray for Cars Vans & Motorbikes | Rust Protection Spray | Ideal Underseal For Cars
- Price
- £17.23
- Rating
- 4.7/5
- Reviews
- 1,561
- Age
- 2y ago

JENOLITE Waxoil Rust Prevention & Protection Aerosol Spray | 3x500ml | CLEAR | Waxoil Aerosol Spray for Cars Vans & Motorbikes | Rust Protection | Ideal Underseal For Cars
- Price
- £23.21
- Rating
- 4.7/5
- Reviews
- 1,561
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 57% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 falling
Sellers
75
Est. top-5 brand share
82%
Top 20: 100%
Est. top-5 click share
57%
Top 20: 92%
Open market
14%
- Hammerite48%
- Liqui Moly13%
- Tetroseal12%
- JENOLITE5%
- Car Pride4%
- Fastcar4%
- Open — no brand owns it (9 brands, 14%)
Demand
Underseal search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 2.0×
Search terms
Top Underseal search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- underseal for cars16K/yr
- underseal17K/yr
- car underseal16K/yr
- car underseal spray11K/yr
- underseal spray6K/yr
- underbody seal spray5K/yr
- underbody seal6K/yr
- schultz underseal4K/yr
- under body rust protection6K/yr
- under seal4K/yr
Reviews and returns
What reviews say buyers love and hate about Underseal
We read the reviews and the return reasons for every product selling here.
“MOT last year commented that there was lots of surface rust all over the chassis”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
19 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Underseal questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









