The Crisis Facing UK Automotive Suppliers
UK automotive suppliers face a convergence of severe margin pressures: Brexit's 55% local content requirement for tariff-free EU trade adds administrative costs of £250–500 per vehicle; UK industrial electricity costs are 50–80% above France or Spain, now representing 8–15% of metal-component manufacturing costs; OEMs demand 3–5% annual cost-down targets and 10–20% reductions on new model launches; and Eastern European suppliers offer 30–40% lower labour costs while Asian competitors undercut by 40–60%. VAVE (Value Analysis Value Engineering) is the primary strategic response.
What Is VAVE and How Do UK Tier-1 Suppliers Apply It?
VAVE maximises function while minimising cost through five steps: function analysis, cost breakdown, alternative generation, evaluation, and implementation. GKN Automotive has achieved 12–18% cost reduction on CV joint housings; Sertec Group integrates VAVE into new product development; Stadco targets high-volume mature product lines. Leading suppliers share savings with OEMs on a typical 60/40 split, using VAVE proactively to gain preferred supplier status rather than waiting for cost-down mandates.
Realistic VAVE Savings by Component Type
- Machined components: material optimisation 5–15%, process optimisation 10–25%, tolerance relaxation 8–15% — total 20–35%
- Cast components: casting process change 15–30%, wall thickness optimisation 5–10%, machining reduction 10–20% — total 25–40%
- Fabricated assemblies: part count reduction 15–30%, process consolidation 10–20%, assembly simplification 8–15% — total 25–40%
- Stamped sheet metal: gauge optimisation 5–12%, tool optimisation 8–15%, secondary operation elimination 10–20% — total 18–30%
Which Parts Are the Best VAVE Candidates?
Prioritise: high-cost components (>£100/unit) such as EV battery enclosures and transmission housings; high-volume parts (>25,000 units/year) where £0.70 savings × 80,000 units = £56,000 annually; over-engineered legacy parts with excessive safety factors; multi-part assemblies for consolidation; and components with high scrap rates. Target the top 10 components by cost × volume in Year 1 — typically 40–60% of program cost.
Running a VAVE Workshop with UK OEMs
A structured 2–3 day workshop follows 3–4 weeks of preparation including component selection, team assembly, and cost data collection. Day 1 covers functional analysis and ideation (generating 50–100+ alternative ideas using the SCAMPER technique). Day 2 evaluates and builds business cases for the top 5–8 concepts. Day 3 finalises selection, risk assessment, and implementation planning. Post-workshop, 3–5 concepts are typically implemented over 6–18 months, delivering 20–35% cost reduction with 3:1 to 10:1 ROI.
