s4p
A car body in a real automotive paint booth, an overhead applicator laying down paint while fine mist drifts through the booth light

Surface process engineering · OEMs & tier-1 suppliers

Results on the line.

Robots programmed and simulated offline, processes stabilized on your shopfloor — savings you can measure, payback within a year.

Trusted across the line

Grid of automotive OEM and tier-1 supplier logos s4p has worked with, including Bentley, Mercedes-Benz, BMW, Audi, Porsche, Volkswagen, Bugatti, Tesla, ABB, Dürr, BASF, Axalta, Magna, Faurecia and SMR

In the client’s own words

Von allen eingesetzten Engineering Dienstleistungen hat S4P die beste Performance abgeliefert. Ein breitgefächertes Erfahrungsspektrum sowie flexibles, praxisorientiertes Arbeiten, welches das Tun in den Vordergrund stellt …
Namit Pabbi · Plant Manager, SMR Automotive Co., Ltd. · original quote in German
Wer Hands-on und Shopfloor-Typen sucht, ist bei der S4P genau richtig.
Phillip Du Plooy · General Manager QA, VW India Pvt. Ltd. · original quote in German
Durchsetzungsvermögen und Überzeugungskraft geprägt mit einem fundamentalen, fachlichen Background sowie einer systematisch, analytischen Denkweise … haben das Projekt für VW erfolgreich werden lassen.
Thomas Engel · GM Purchase New Launches, VW India Pvt. Ltd. · original quote in German

Fifty years of coating know-how, in one team.

s4p was founded in 2009 after more than 50 years of combined, hands-on experience in car-body and plastic-part surface coating across the automotive industry. We are a small team of well-chosen experts, drawn from across the globe and proven on the line, not just on paper.

Experts on the line in

EUUSAMexicoChinaIndiaRSA

Where the money is made on the line.

Macro of a mirror-gloss anthracite clearcoat with controlled overspray fading into darkness

Painting

A flawless finish, with less paint wasted.

Booth, robot path, and dosing tuned until overspray vanishes and cost drops.

  • Overspray and material loss reduced
  • Flawless finish, mirror-gloss reflectivity
  • Live monitoring and preventive maintenance
  • Faster, cleaner facility launches

Measured on the line, not the slide deck.

Team

  • 50+ yrs

    Combined line experience

    A small senior team — every engineer proven on the line, not just on paper.

  • 2009

    Founded

    Built on careers that started decades earlier in automotive surface coating.

  • Senior only

    Who does the work

    The people you meet are the people on your line — no leverage pyramid.

Reach

  • 6 regions

    On-site, worldwide

    Experts on the line in the EU, USA, Mexico, China, India and RSA.

  • OEM + Tier-1

    Both sides of the interface

    We have run the OEM–supplier interface from both sides.

  • On the line

    Shopfloor, not slide deck

    We program, dose, plate and stabilize on your line, alongside your team.

Method

  • ≤ 1 yr

    Payback

    The bar our engineering is scoped against: return on invest within a year.

  • Before / after

    Documented results

    Every engagement measured on the line, per project — never averaged.

  • Transfer

    Know-how stays

    The method is handed over, so the line keeps improving once we are gone.

Get the number for your line

Documented before/after, per project — never averaged.

How we engage.

01

Analyze

Assess the line, the tooling, and the data.

02

Plan

Prepare a concrete action plan with the cost, the function, and the timeline made explicit.

03

Implement

Program, dose, plate, and stabilize on the floor, alongside your team.

04

Release

Validate against OEM milestones and hand over a process that holds.

The know-how stays with your team.

We transfer the method, not just the result.

Coating processes

Atomization, film build, and booth climate, tuned to a repeatable window.

Robot programming

Path, dosing, and shaping air your own team can adjust without us.

Process diagnostics

Reading the line — data, tooling, application — to find the real weakness, not the symptom.

Bring us your hardest line. We will give you the number.

Tell us about the part, the booth, or the defect. We respond with a concrete read on where the time and the material are going.

Start a project

or write directly: info@s4p-engineering.ch

Your mail lands with a senior process engineer, not a sales desk.

EUUSAMexicoChinaIndiaRSA