10 & 18 Speed Differential / Final Drive for American Truck Simulator
Alternative differential ratios for the 10- and 18-speed transmissions, gears untouched: more torque for heavy loads or lower RPM on the road. Free; ATS 1.60.
Download 10 & 18 Speed Differential / Final Drive
More screenshots on Steam Workshop ↗
What this mod does
10 & 18 Speed Differential / Final Drive, by yusogame, adds alternative differential (final drive) ratios to several 10- and 18-speed transmissions. The individual gear ratios don’t change: only the differential, which decides whether the truck cruises more relaxed on the highway or pulls harder under load.
Options for 18-speed transmissions
- 3.36: balanced, for general use, highway and heavy loads.
- 3.55: heavy haul, steep grades and maximum traction.
- The stock 3.25 ratio isn’t included: to use it, pick the standard transmission.
Options for 10-speed transmissions
- 2.64: the stock ratio, for low-RPM road driving (this one is included).
- 3.08: balanced, for medium and heavy loads.
- 3.36: for heavy loads, grades and low-speed hauling.
Which one to pick
A lower ratio gives fewer engine RPM at the same speed; a higher one gives more torque at the wheels. Choose based on weight, terrain and the cruising speed you want.
Compatibility
It works with the transmissions of many Freightliner, International, Kenworth, Mack, Peterbilt, Volvo, Western Star and Ford trucks. It depends on each transmission’s definition, so modded trucks may need their own patch. The author marks it for ATS 1.60 and the 1.61 open beta.
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User rating
Highlights and things to keep in mind
- Clearly explains what each ratio is for
- Doesn't alter the gears
- Covers many brands
- Modded trucks may need a patch
- Marked for 1.60 and the 1.61 beta
- Some users debate how realistic the ratios are
Requirements
- American Truck Simulator 1.60 (and the 1.61 open beta, according to the author)
- Steam account
- A truck with a compatible 10- or 18-speed transmission
How to install it
- Open the “10 & 18 Speed Differential / Final Drive” page on Steam Workshop and click “Subscribe”.
- Launch American Truck Simulator and wait for Steam to finish downloading the mod.
- In your profile's Mod Manager, enable “10 & 18 Speed Differential / Final Drive”.
- Go to a service shop and choose the 10- or 18-speed transmission with the differential you want.
Version history
-
5 Sep 2026Current
Last update (6 changelog notes; contents not read)
-
2 Sep 2026
Release
Common problems
Does it change the gear ratios?
No, only the differential or final drive.
Where's the 3.25 ratio for the 18-speeds?
It isn't included: use the game's standard transmission.
Does it work on modded trucks?
It depends on their transmissions; some will need their own patch, according to the author.
More mods for ATS
✓ ATS 1.61Requires DLC 
ATS 1.58 
ATS 1.60 
ATS 1.59 
✓ ATS 1.61Multiplayer 
ATS 1.57