American Truck Simulator Sound Free

Interior Soundproofing for SCS Trucks and Cars (Knights Gaming) for American Truck Simulator

Improves cab soundproofing on 15 SCS trucks and 4 Ford cars, with a separate version for modded trucks. Free; version 2.0 from October 2026.

Author: Knights Gaming Version: 2.0 Compatible: No version listed; updated 2026-10-19 (ATS 1.61; a user confirms it works on the final 1.61) Updated: 19 Oct 2026 Reviewed: 24 Oct 2026
Download Interior Soundproofing for SCS Trucks and Cars (Knights Gaming)

More screenshots on Steam Workshop ↗

What this mod does

Interior Soundproofing is a pair of mods by Knights Gaming that improves cab soundproofing: the engine and outside noise sound more muffled inside, like in a modern truck. They’re also required by his Volvo D13 and Mack E7 engine sounds.

Version for SCS vehicles

  • 15 trucks: Freightliner Cascadia 2019 and 2024; International 9900i, LoneStar and LT; Kenworth T680 2022 and W900; Mack Anthem and Pinnacle; Peterbilt 389; Volvo VNL 2018 and 2025; Western Star 49X, 57X and 5700XE.
  • 4 Ford cars: Mustang 67, Crown Victoria 06, Bronco 24 and F-150 23 (support added in 2.0).
  • More faithful sound of the automatic transmission at work.

Version for modded trucks

Interior Soundproofing for Modded Trucks (a separate Workshop item) covers the Mack R Series, the Kenworth K100E, Smarty’s Peterbilt 351 and 358, the Outlaw Peterbilt 359 V2 and the Freightliner FLB edited by Harven.

Compatibility

The author says it works best with Slav Jerry’s sounds. Both are marked as optional for Convoy multiplayer. One user comments that with it, the T680’s 510 hp Paccar sounds too high-pitched.

Version

Version 2.0 of the SCS pack is from October 19, 2026 and a user confirms it works on ATS 1.61; the modded trucks version was updated on August 21.

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Highlights and things to keep in mind

Highlights
  • Covers almost all SCS trucks and the Ford cars
  • Tiny files
  • Optional in Convoy
Keep in mind
  • The modded trucks version only covers six models
  • May change the tone of some engines (T680 with Paccar 510)
  • The author doesn't list a game version

Requirements

  • American Truck Simulator 1.61 (no version listed by the author; updated in October 2026)
  • Steam account
  • For the Ford cars: SCS's Road Trip vehicles (optional)
  • For modded trucks: the “for Modded Trucks” version and the matching truck

How to install it

  1. Open the “Interior Soundproofing for SCS Trucks and Cars” page on Steam Workshop and click “Subscribe”.
  2. If you use compatible modded trucks, also subscribe to “Interior Soundproofing for Modded Trucks” (Steam Workshop 3784663615).
  3. Launch American Truck Simulator and wait for Steam to download the mods.
  4. In the Mod Manager, enable the pack or packs you need.
  5. Get in the cab and compare the sound with the mod enabled and disabled.

Version history

  1. 2.019 Oct 2026Current

    Support for the Road Trip Ford cars

  2. 1.121 Aug 2026

    Added Mack Anthem/Pinnacle, Volvo VNL 2018/2025 and the automatic transmission sound

  3. 2.0 (Modded Trucks)21 Aug 2026

    Rebuilt; added the Mack R Series

Common problems

Does it work for modded trucks?

Yes, with the separate “for Modded Trucks” version, which covers six specific trucks.

Does it work in Convoy?

Both mods are declared optional for multiplayer.

Does it work on ATS 1.61?

A user confirms it does on the final 1.61 release.

Why does another mod ask for it?

The same author's Volvo D13 and Mack E7 engine sounds have required it since August 2026.

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ATS · PhysicsFree Ford Improved Powertrain (Knights Gaming) New engines and transmissions for the four Road Trip Fords: 289 High-Performance and 390 GT in the Mustang, Police and Marauder in the Crown Victoria, a supercharged V8 F-150 and a fixed Bronco EcoBoost. Updated 6 Oct 2026
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ATS · SoundFree Realistic Air-Condition/Heating Automatic Sound Adds the sound of the A/C and heater inside the cab, with fan speeds that change on their own, a pause when you open the window and a reaction to rain. Free on Steam. Updated 6 Dec 2025
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ATS · SoundFree Mack E7 E-TECH Engine Sound (Knights Gaming) Mack E7 E-TECH and ASET engines from 400 to 460 hp, plus a 525 hp version, for the modded Mack R Series and the Mack Pinnacle. Free; v1.5 from August 2026. Updated 24 Aug 2026
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ATS · SoundFree Detroit Diesel 6-71 Straight Pipe Sound The two-stroke Detroit Diesel 6-71, from 230 to 310 hp, plus the marine 6-71TI, with a straight pipe for modded trucks. Free, by Slav Jerry; January 2026. Updated 23 Jan 2026
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ATS · SoundFree Mack E9 V8 Straight Pipe Sound Mack's legendary V8, the E9 from 400 to 500 hp, with a straight pipe for four modded Macks (R Series, Superliner and MH613). Free, by Slav Jerry; updated April 2026. Updated 28 Apr 2026