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Diesel Injector Cleaner

Fail

The top 5 brands take 98% of clicks, so Diesel Injector Cleaner is a Fail.

Flapen Score
42
42 / 100
Ranks 604 of 811 Automotive niches · −7 vs the category median of 49
Market size
£282K/yr335K searches / yr
90-day growth
-4.3%search demand this quarter
Competition
73%top-5 click share · 6 brands · 66 sellers

Flapen Score

Diesel Injector Cleaner against its category

The dotted line is the Automotive average. Past it, Diesel Injector Cleaner is stronger. Inside it, weaker.

42Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Diesel Injector Cleaner market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Diesel Injector Cleaner 335K times last year and spent an estimated £282K. The top 5 brands take 98% of clicks. Flapen scores it 42 out of 100, a Fail.

01 · Demand

An estimated 9.9% of those searches ended in a purchase.

Shoppers searched for this 335K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 9.9% of those searches ended in a purchase. Searches in the last 90 days moved -4.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £282K a year.

Searches, last 12 months
335K
Growth, 90 days vs prior 90
-4.3%
Conversion, latest week
9.9%
Market size, estimated
£282Ka year
Peak month
October1.3× the quietest month
Top search term
diesel injector cleaner99K searches a year

02 · Price

A sale here is worth £8.51.

Listings sell for £8.51 on average, from £2.76 to £20.93. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 2,000 to 2,500 of them. At £8.51 that is £17K to £21K a year per listing.

Average price
£8.51under the $15 to $100 sweet spot
Price range
£2.76–£20.93
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
30K–40K
Units per listing a year
2,000–2,500
Revenue per listing a year
£17K–£21K
Returns
0.3%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

77% of listings pay for placement with sponsored ads. 85% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #19 within Oils & Fluids. It carries 1,796 reviews at 4.56 stars, so a new listing needs social proof before a better product.

Sponsored listings
77%
Prime listings
85%
Out of stock, average day
0.0%
Average rank
#19in Oils & Fluids
Average rating
4.56 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,796per listing
Listings tracked
13

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 71 months on average, so the names here are established.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
71 months

Products

Top Diesel Injector Cleaner 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 18, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.

£0£28K£56K£85K£113K1001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

6 falling

Sellers

66

Est. top-5 brand share

98%

Top 20: 100%

Est. top-5 click share

73%

Top 20: 100%

Open market

0%

  • STP42%
  • Redex39%
  • Liqui Moly7%
  • Archoil6%
  • Carlube5%
  • WOL WORLD OF LUBRICANT2%
  • Open — no brand owns it (0%)

Demand

Diesel Injector Cleaner search demand

Weekly searches over the year, seasonality beneath. Pick a range.

9K7KSpike '24Prime Day '25Spike '25Black Friday '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Search terms

Top Diesel Injector Cleaner search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • diesel injector cleaner99K/yr
  • diesel additive44K/yr
  • redex diesel fuel system cleaner42K/yr
  • fuel systems10K/yr
  • diesel cleaner29K/yr
  • diesel fuel system cleaner14K/yr
  • diesel fuel additive14K/yr
  • stp ultra 5 in 1 fuel system cleaner diesel8K/yr
  • diesel engine cleaner12K/yr
  • diesel system cleaner11K/yr

Reviews and returns

What reviews say buyers love and hate about Diesel Injector Cleaner

We read the reviews and the return reasons for every product selling here.

21%of positive reviews mention “Quality-Overall”
15%of negative reviews mention “Value For Money”
0.3%of orders come back
“it went up in price”
A buyer, on “Value For Money”15% of negative reviews mention the same topic

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.

22 topics

NegativePositive

FAQ

Common Diesel Injector Cleaner 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