ASPICE 4.0 Capability Levels Explained
One of the most important concepts in ASPICE is the Capability Level model.
While ASPICE process groups define what organizations should do, Capability Levels evaluate how well those processes are implemented and managed.
For automotive suppliers and OEMs, Capability Levels provide an objective way to measure process capability and demonstrate continuous improvement.
In this article, we explain the five ASPICE 4.0 Capability Levels, how they build upon one another, and why they are central to ASPICE assessments.
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Why Capability Levels Exist
Developing processes is only the first step.
Organizations must also demonstrate that these processes are consistently performed, managed, measured, and improved.
Capability Levels provide a structured assessment model that evaluates process implementation using standardized Process Attributes (PAs).
This allows organizations to:
- objectively assess process capability
- compare projects consistently
- identify improvement opportunities
- increase development quality
- prepare for customer and supplier assessments
Rather than simply asking whether a process exists, ASPICE evaluates how effectively it is executed throughout the organization.
The Five Capability Levels
ASPICE 4.0 defines five Capability Levels.
Each level represents a higher degree of process maturity and organizational discipline.
The Capability Levels are:
- CL1 – Performed Process
- CL2 – Managed Process
- CL3 – Established Process
- CL4 – Predictable Process
- CL5 – Innovating Process
Each level builds upon the previous one.
An organization cannot achieve a higher Capability Level without first satisfying the requirements of the lower levels.
This staged approach supports sustainable process improvement rather than isolated optimization efforts.
Capability Level 1 – Performed Process
Capability Level 1 demonstrates that a process is successfully performed and achieves its intended purpose.
The primary objective is to show that expected work products are produced and required activities are carried out.
Typical characteristics include:
- required activities are performed
- expected work products are created
- process objectives are achieved
At this level, the focus is on process execution, not on standardized management practices.
Organizations may achieve consistent technical results while still relying heavily on individual experience and project-specific approaches.
Capability Level 2 – Managed Process
Capability Level 2 introduces structured project management.
Processes are no longer simply performed—they are planned, monitored, and controlled.
Typical characteristics include:
- project planning
- defined responsibilities
- resource management
- work product management
- monitoring and control
Management activities improve repeatability and provide greater confidence that processes will produce consistent results across projects.
This level often represents a significant step toward organizational maturity.
Capability Level 3 – Established Process
Capability Level 3 extends management beyond individual projects.
Processes become standardized across the organization and are deployed consistently.
Typical characteristics include:
- organizational process standards
- defined methods and procedures
- common templates
- standardized training
- consistent implementation across projects
The emphasis shifts from project-specific execution to organization-wide process consistency.
This enables improved collaboration and more predictable development outcomes.
Capability Levels 4 and 5
The highest Capability Levels focus on measurement, predictability, and continuous optimization.
Capability Level 4 – Predictable Process
At CL4, organizations use quantitative data to control process performance.
Typical activities include:
- performance measurement
- statistical monitoring
- quantitative process control
- performance prediction
Objective metrics support informed management decisions and improve process stability.
Capability Level 5 – Innovating Process
Capability Level 5 emphasizes continuous improvement and innovation.
Organizations actively optimize processes using measurement results, lessons learned, and emerging best practices.
Typical activities include:
- continuous improvement initiatives
- innovation programs
- root cause analysis
- process optimization
- organizational learning
Although relatively few organizations pursue CL4 or CL5 across all processes, these levels represent the highest degree of process capability.
How Capability Levels Build Upon Each Other
One of the key principles of ASPICE is that Capability Levels are cumulative.
Each level builds on the foundation established by the previous level.
The progression can be summarized as follows:
- CL1 – The process is performed.
- CL2 – The process is managed.
- CL3 – The process is standardized across the organization.
- CL4 – The process is quantitatively controlled.
- CL5 – The process is continuously optimized.
This structured progression helps organizations improve systematically rather than attempting to implement advanced practices before establishing a stable foundation.
Capability Levels and ASPICE Assessments
Capability Levels are at the heart of every ASPICE assessment.
Assessors evaluate Process Attributes (PAs) associated with each Capability Level and determine whether they are achieved according to the ASPICE rating scale.
Assessment results provide valuable insight into:
- process strengths
- improvement opportunities
- organizational capability
- supplier maturity
- customer confidence
For many automotive suppliers, achieving the required Capability Levels is essential for participating in customer projects and demonstrating process excellence.
Understanding the Capability Level model is therefore fundamental for engineers, project managers, quality professionals, and assessment teams.
Summary
The ASPICE 4.0 Capability Levels provide a structured framework for evaluating process capability and organizational maturity.
The five Capability Levels are:
- CL1 – Performed Process
- CL2 – Managed Process
- CL3 – Established Process
- CL4 – Predictable Process
- CL5 – Innovating Process
Each level builds upon the previous one, encouraging organizations to improve processes in a systematic and sustainable way.
Whether preparing for an ASPICE assessment or implementing process improvements, understanding the Capability Level model is essential for achieving consistent, high-quality automotive development.
