In-Service Compliance (ISC) / In-Use Performance Ratio (IUPR) Service
Price on request
Scope of services per package
| Service | Budget | Balanced | Premium |
|---|---|---|---|
| Contract type | Service contract | Contract for work | Contract for work |
| Consultant level (Junior / Senior) | 80% / 20% | as required | as required – min. 80% Senior |
| Performance guarantee | subject to billing of additional expenditure | limited (additional expenditure billed at daily/hourly rate) | unlimited |
| Payment terms | 25% advance payment, balance monthly (7 days) | 30 days, monthly interim billing | 60 days, installment payment 0.00% interest |
| Liability | none | tbd |
Description
ISC Objectives
In-Service Compliance is a mandatory statutory requirement for vehicle manufacturers.
The legislator stipulates that exhaust aftertreatment systems must maintain a sufficiently high level of efficiency throughout the vehicle's useful life to ensure compliance with statutory limits.
In addition to design-side verification via type approval and tolerance verification in production via CoP, this introduces the third element: verification throughout the in-use operational phase. Vehicles aged between 6 months and 5 years, with a mileage of 15,000 to 100,000 km, must be tested and evaluated regarding emissions and consumption / energy consumption compliance.
IUPR Objectives
In-Use Performance Ratio is also a mandatory statutory requirement for vehicle manufacturers.
The legislator stipulates that the self-diagnostic system of exhaust aftertreatment systems must remain capable of detecting potential faults throughout the vehicle's useful life. For this purpose, diagnostic cycles in the engine control unit must run completely at a specified rate (relative to engine start operations – "key cycles") and yield a positive diagnostic result at a specified rate.
In addition to design-side verification via type approval (including OBD detection of aged and defective exhaust aftertreatment components) and tolerance verification in production via CoP, this adds the third element: verification throughout the in-use operational phase. Vehicles aged between 6 months and 5 years, with a mileage of 15,000 to 100,000 km, must demonstrably satisfy the IUPR criteria.
Scope of Our Services
We can handle the entire process or individual phases as a service on your behalf
- Definition of ISC / IUPR families and the criteria for the vehicles to be tested
- Development / further elaboration of the required processes and test plans
- Procurement (loan/rental) of suitable customer vehicles
- Procurement of a suitable testing laboratory – supervision of measurements – analysis / evaluation of measurements
- Reporting / recommendation of corrective actions in the event of non-conformities
Note: Pricing varies depending on vehicle category, vehicle quantity, and other criteria. Please contact us for a customized proposal
Contact
Require a customized proposal or have questions? Simply contact us.

Mark Haacke
Founder & Managing Director
Compliance Engineering, Type Approval, Functional Safety
For over 25 years, Mark Haacke has combined deep technical expertise with regulatory foresight. He guides manufacturers from the early conceptual phase through to market launch, translating complex regulations into technical implementation during product development and modification, product failure analysis and assessment, and the definition of corrective actions.
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