KDP categories · Top KDP authors
Engines & Transmissions: Amazon KDP category data
Amazon Books Best Sellers data for Engines & Transmissions, updated Nov 2, 2026: median price $29.43, median 93 reviews, average rating 4.6 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $18.99 – $31.99 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 17% |
| Books on the list | 100 |
| Store | Books |
What stands out
- 17% of its best sellers came out in the last 90 days, more than in 86% of Books categories: readers here keep buying new titles.
- Its median reviews are 39% of the parent category Repair & Maintenance (236), one of the easier corners under it.
- At $29.43 its median price beats 88% of Books categories, leaving more margin per copy.
Top 10 Engines & Transmissions best sellers
-
Vehicle Maintenance Log Book: Car Repair Journal / Automotive Service Record Book / Oil Change Logbook / Auto Expense Diary / Engine Autolog / Automobile, Truck Or Motorcycle Owner Gift Notebook
by Bri Auto Publication
- List rank#1
- Price$6.95
- Rating4.6
- Reviews1,050
-
Small Engine Repair Made Simple: Fix Your Own Lawn Mower, Chainsaw, Trimmer, Generator and Snowblower — Step-by-Step Illustrated Repairs, Troubleshooting Flowcharts and Seasonal Maintenance Checklists
by Andrew Gregory
- List rank#2
- Price$23.74
- Rating5.0
- Reviews1
-
Vehicle Maintenance Log Book: Track Maintenance, Repairs, Fuel, Oil, Miles, Tires And Log Notes - Car Repair Journal - Oil Change Log Book - Auto Expense Diary - Cars, Trucks, And Other Vehicles
by Triangle Business
- List rank#3
- Price$6.99
- Rating4.6
- Reviews663
-
Small Engine Repair Handbook for Beginners: Fix Your Own Mower, Chainsaw, Generator and Snowblower, Stop Replacing the Wrong Part, and Use the Right Numbers for Your 2-Stroke or 4-Stroke Engine
- List rank#4
- Price$22.99
- Rating4.6
- Reviews37
-
Chevrolet & GMC Full-Size Pick-Ups (1988-1998) & C/K Classics (1999-2000) Haynes Repair Manual (Does Not Include Information Specific to Diesel Engines)
by Haynes Manuals
- List rank#5
- Price$38.97
- Rating4.6
- Reviews1,590
-
How to Rebuild GM LS-Series Engines (S-A Design)
by Chris Werner
- List rank#6
- Price$28.87
- Rating4.8
- Reviews1,791
-
Small Engines and Outdoor Power Equipment, Updated 2nd Edition: A Care & Repair Guide for: Lawn Mowers, Snowblowers & Small Gas-Powered Imple
by Editors of Cool Springs Press
- List rank#7
- Price$18.31
- Rating4.6
- Reviews511
-
Auto Repair For Dummies
by Deanna Sclar
- List rank#8
- Price$18.13
- Rating4.6
- Reviews2,233
-
Small Engine Repair & Troubleshooting Manual: A Step-by-Step Guide to Diagnosing, Repairing & Maintaining Four-Stroke Small Engines
by Owen P. Harwood
- List rank#9
- Price$22.99
- Rating5.0
- Reviews14
-
Complete Small Engine Repair & Maintenance Handbook: Step-by-Step Diagnostics, Engine Rebuilding, Fuel Systems, Ignition, Carburetors, Electrical ... Two-Stroke and Four-Stroke Small Engines
by Judson Slone
- List rank#10
- Price$32
- Rating5.0
- Reviews3
FAQ
Is Engines & Transmissions a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 93 reviews and sells for $29.43.
How many reviews do you need to rank in Engines & Transmissions?
The median best seller has 93 reviews, and 51% of them have fewer than 100.
What do Engines & Transmissions best sellers cost?
The median price is $29.43; half of the best sellers are priced between $18.99 and $31.99.
Can new books break into Engines & Transmissions?
17% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.