Design Optimisation

Design-to-Cost

Cost targets engineered into the design before commitments lock in — because most cost is decided long before it’s spent.

Up to 80% of a product’s cost is determined in design. We bring cost targets and should-cost data into the design process itself, so engineers trade off cost and performance with eyes open — before the cost is locked in.

The problem

When cost is locked in too late

By launch, the costly decisions were made in design months earlier.

01

Cost as an afterthought

Design optimises for performance; cost is checked too late.

02

No cost targets

Engineers design without a clear cost budget per function.

03

Expensive late changes

Cost-out after design means costly rework or none at all.

What we do

Cost in the design loop

Decide cost while it’s still cheap to change.

Cost Targets by Function

Cost Targets by Function

A cost budget per function, set before design starts.

Real-Time Cost Feedback

Real-Time Cost Feedback

Should-cost estimates as design choices are made.

Cost/Performance Trade-offs

Cost/Performance Trade-offs

Quantified trade-offs to guide design decisions.

What you get

What you receive

Cost designed in, not bolted on.

Cost target framework

Function-level cost budgets for the design team.

Design cost models

Should-cost estimates wired into design choices.

Trade-off analyses

Cost vs performance, quantified at decision points.

Book a 60-minute working session

Bring a real decision or dataset — we’ll show you how KEPLER would approach it, with no obligation.

Book a 60-minute session
Where we start

A focused, low-risk first step

We start with a short diagnostic — the decision to improve, the data behind it, and a first slice that proves value fast. See how we engage →

Sample outputs

Typical cost & VAVE artifacts you’ll receive

BOM cost modelShould-cost workbookSupplier cost benchmarkTeardown cost bridgeMaterial substitution shortlistVAVE opportunity tracker
Engagement model

Engage at the level that fits

From a quick diagnostic to a fully managed service — start small and scale as value is proven. How we engage →

How we work

How design-to-cost works

Cost decisions, made early.

Target

Cost budgets are set per function up front.

Estimate

Design choices get live should-cost feedback.

Trade off

Cost and performance are weighed together.

Decide

Designs are chosen against the cost target.

Track

Actual cost is tracked back to the target.

Outcome

Cost decided when it’s cheap to change

Products hit their cost target by design, not by luck.

  • Cost targets set before design
  • Live should-cost feedback
  • Cost/performance trade-offs clear
  • Targets met by design
TargetsUp front
FeedbackReal-time
Trade-offsQuantified
CostDesigned in
FAQ

Common questions

Does this slow design down?
No — it gives engineers cost feedback as they work, so they avoid expensive dead-ends rather than discovering them late.
Who owns the cost target?
It’s set jointly with engineering and finance, so it’s realistic and owned, not imposed.
Use cases

Representative use cases

Common problems in this area, how KEPLER solves them, and the likely outcome.

Cost targets are set after the design is largely fixed
Automotive · New programme

Cost targets are set after the design is largely fixed

15–25% cost locked at design

View details →
Engineering can’t see the cost of a design choice as they make it
Industrial equipment · Trade-offs

Engineering can’t see the cost of a design choice as they make it

Live cost per option

View details →
Products launch, then get value-engineered to hit margin
Consumer durables · Target margin

Products launch, then get value-engineered to hit margin

Fewer post-launch redesigns

View details →

Design to your cost target

Tell us about an upcoming design and we’ll build cost into it from the start.

Talk to our VAVE team