Engine Test & Validation Intern

PACCAR Powertrain is seeking motivated and innovative engineering students to join our Summer 2026 Internship Program within the Engine Test Lab team. Interns will work hands-on with heavy duty powertrain systems to support testing, validation, and performance evaluation of PACCAR’s next generation engines and aftertreatment technologies.

As an Engine Test Intern, you will work alongside experienced engineers and technicians to support testing activities in a world-class engine development environment. You will contribute to:

• Conducting performance, durability, and emissions tests on heavy duty engines and powertrain systems

• Supporting validation of new engine hardware, software, and aftertreatment components

• Designing and building tools or fixtures to improve powertrain testing efficiency, emissions measurement, and data processing workflows

• Troubleshooting issues with test cell instrumentation and data acquisition systems

• Analyzing test data using tools such as AVL Concerto

• Assisting with technical report preparation and documentation updates for instrumentation and data acquisition systems