Peterbilt
TruckBusWorld's Peterbilt model pages, the engine pages that name these models, and the articles that mention the brand.
Models
Peterbilt 579Peterbilt's on-highway Class 8 tractor: PACCAR MX-13 and MX-11 engines, TX-12 and TX-18 gearboxes, the DX-40 axle, the UltraLoft sleeper and the battery-electric 579EV.
Peterbilt 537 / 548Peterbilt's medium-duty Model 537 (Class 7) and Model 548 (Class 8): PACCAR PX-7 and PX-9 and Cummins natural gas engines, the TX-8 gearbox, axle ratings, cab and equipment.
Engine families
Cummins L9 engine: displacement, ratings and the trucks that use itThe Cummins L9 is an 8.9-litre six-cylinder in-line engine: its data and ratings in Cummins' bulletins of 2022 to 2025, its emission rules, the L9N and the trucks on this site.
PACCAR MX-11 engine: displacement, ratings and generationsThe PACCAR MX-11 is a 10.8-litre in-line six-cylinder diesel: its Euro 6 truck and coach ratings of 220 to 330 kW, its US EPA ratings and its stages since 2013.
PACCAR MX-13 engine: displacement, ratings and generationsThe PACCAR MX-13 is a 12.9-litre in-line six-cylinder diesel: its Euro 6 and US EPA ratings, its 2021, 2023 and 2024 updates and the B100 version of 2025.
Articles that mention the brand
- What is a power take-off (PTO) on a truck? Types, mounting and ratings
- A truck in numbers: gears, power, tyres, fuel tanks, engine life and speed
- Who owns which truck and bus brand: the groups behind the badges
- Largest truck manufacturers in the world: 2025 figures and what they count
- PACCAR PX-7 engine: displacement, ratings and generations
- The biggest trucks and buses in the world: payload, length and power
- Who builds trucks in Europe