Automotive CAE playbook
Automotive & EV Tier-1 Supplier Playbook: Optimizing CATIA, Siemens NX & Ansys Crash/Thermal Simulation Token Pools
Tier-1 suppliers usually carry more CAD and simulation capacity than they use, because OEM programs peak unpredictably and nobody wants a solver queue at a gateway review. With Siemens NX at about $11,500 per seat a year and an Ansys solver seat at about $22,000 plus $12,500 for a 32-core HPC pack, a 20% over-provision on a mid-size CAE group is commonly worth $100,000-$250,000 a year. Measure peak concurrency from license logs for 90 days before every renewal.
01Why Tier-1 suppliers over-provision CAD and CAE
Four forces push automotive suppliers toward more licences than they need.
- OEM-mandated tools. Each OEM customer specifies the CAD platform and often the exact version for data exchange. A supplier serving three OEMs may need CATIA, NX and a third tool at once, each with its own pool and its own renewal date.
- Program peaks. Crash, durability and battery thermal runaway work clusters before gateway reviews. Licences are sized to the peak and sit idle in between.
- Named seats nobody reclaims. Engineers who move to supplier quality or program management keep their CAD seats for occasional viewing.
- Core-locked solvers. Base Ansys solver seats unlock 4 CPU cores. Crash and CFD models need 32-128 cores, so HPC packs at $8,000-$28,000 a year get added per program and rarely removed.
None of this is waste in the moment. It becomes waste when renewals repeat last year's quantities without data. Vendors and resellers commonly propose renewal at current quantity plus an uplift; the burden of proof for a reduction sits with you.
Vendor ownership has also shifted. Ansys is now part of Synopsys, and Altair, whose units-based licensing many CAE groups use, is now part of Siemens. Ownership changes can bring new licensing terms at renewal. Ask for any change to licence models, token conversion rates or support terms in writing, with the effective date.
02Licence models you will be offered
Each model fits a different usage pattern. The right mix usually combines a small base of fixed seats with a flexible pool.
| Model | How it bills | Fits | Check before signing |
|---|---|---|---|
| Named or node-locked seat | Fixed annual fee per user or machine | Daily full-time users | Reassignment rules when staff change roles |
| Floating concurrent seat | Fixed fee per concurrent user, often 20%-30% premium | Teams with staggered use | Peak concurrency from license server logs |
| Token or value-based pool (e.g. NX VBL) | Tokens consumed per product per hour or day | Mixed tools, uneven use | Minimum commitment, commonly $25,000-$60,000/yr |
| HPC packs | Annual fee per core tier | Steady large-model solving | Core utilization over 90 days |
| Elastic or cloud burst | Pay per use, metered | Short peaks and gateway crunches | Metering unit rate and monthly caps |
Ask the reseller for the token consumption table for every product in a pool. A pool that looks cheap per token can be expensive if the products your analysts run most consume tokens fastest.
03Telemetry: the numbers to pull before any renewal
License servers already record what you need. FlexNet-based servers keep debug and report logs of every checkout. Pull 90 days or a full program cycle, whichever is longer, and compute these figures per product.
- Peak concurrency. The highest number of seats in use at once, and how many hours per month you were within one seat of the cap. The house benchmark for a healthy floating pool is 72%-85% peak concurrency, or roughly 2.4 to 3.2 engineers per floating seat.
- Denials. How often a checkout was refused because the pool was full. Zero denials over 90 days with low peak usage means the pool is oversized.
- Solver hours per week. For each solver seat and HPC pack, hours actually running jobs. Below about 28 hours a week, metered cloud burst is usually cheaper than a dedicated seat plus HPC pack.
- Core utilization. Jobs that request 128 cores but scale poorly past 32 are paying for idle cores.
- Named-seat last use. Seats not opened in 60 days are candidates for reassignment or removal.
Run the seat math in the CAD and PLM license audit calculator and see the Ansys HPC pack audit for solver-specific terms.
04Cost model: a 40-engineer CAD group and a 12-seat CAE team
A Tier-1 supplier of battery enclosures and thermal systems. Benchmarks from the house figures; elastic burst cost is an illustrative quote to check against your vendor.
| Line | Current | Telemetry finding | Proposed | Annual change |
|---|---|---|---|---|
| Siemens NX seats | 40 x $11,500 = $460,000 | Peak concurrency 28; 6 seats unused in 60 days | 32 seats = $368,000 | -$92,000 |
| Ansys solver seats | 12 x $22,000 = $264,000 | 5 seats under 15 solver hrs/week | 7 seats = $154,000 | -$110,000 |
| Ansys HPC packs | 4 x $12,500 = $50,000 | 2 packs used under 20% of the time | 2 packs = $25,000 | -$25,000 |
| Elastic cloud burst | None | Gateway peaks 6-8 weeks a year | Illustrative quote $30,000/yr | +$30,000 |
| Net | $774,000 | $577,000 | -$197,000 |
The saving is 25% of the estate. Two checks before acting. First, cost of waiting: if a smaller pool adds 2 hours a week of queue time for 20 engineers at a loaded $90/hr, that is 40 x $90 = $3,600 a week, or about $187,000 a year, which would erase most of the saving. Telemetry denial counts tell you whether that risk is real. Second, contract terms: some agreements restrict quantity reductions mid-term or price reduced quantities at a higher unit rate. Read the reduction clause before the renewal notice period opens.
05Negotiation levers beyond seat count
Quantity is the biggest lever, but not the only one. Buyers who prepare these points before the renewal call commonly improve terms even where seat counts cannot move.
- Uplift caps. Renewal escalations of 8%-14% are common when nothing is negotiated. Ask for a multi-year agreement with a written annual cap, and compare the capped total against single-year renewals.
- Co-terming. Suppliers with several renewal dates per vendor pay more in admin and lose leverage. Ask to co-term all products to a single date, prorating the first period.
- Pool conversion. Converting rarely used named seats into a token or floating pool keeps access for occasional users without paying for full seats. Ask for the conversion rate in writing.
- Program-term licences. For a single OEM program that needs extra crash or thermal capacity for 6-9 months, ask for term licences that end with the program instead of permanent additions to the base.
- Training and support credits. If quantity drops, some vendors will hold the total by adding services. Take them only if you will use them.
- Bundled cloud add-ons. Check for platform or cloud storage add-ons in the renewal quote that nobody requested, and ask for them to be removed or itemized.
06OEM data rules, functional safety and security
Licence optimization must fit inside the quality and security frame your OEM customers impose.
- IATF 16949 is the automotive quality management standard most OEMs require of suppliers. Changes to engineering tools that affect design records may need to follow your document and change control.
- ISO 26262 governs functional safety of road vehicle electrical and electronic systems. Simulation tools used to produce safety evidence may need tool confidence assessment; keep tool versions stable through a program rather than switching for price mid-program.
- TISAX, the assessment and exchange mechanism based on the VDA information security catalogue, is commonly required by German OEMs and increasingly elsewhere for suppliers handling prototype or confidential data. Moving simulation to a cloud burst provider puts that provider in scope; confirm their security posture and where data is processed before sending OEM models.
- OEM CAD versions. Before consolidating platforms, check each customer's CAD exchange requirements. Translation through neutral formats is often allowed for some data and not for released models.
Engineering staffing for program peaks is the other lever. Contract CAE analysts bill $72-$135/hr through agencies; offshore FEA and CFD bureaus run about $26/hr or $4,160 a month per FTE, plus 18% internal review. Remember Section 174 amortization on foreign research spend.
07Phased renewal checklist
180 days before renewal
- Export license server logs for every product; start 90-day telemetry if not already running.
- List OEM-mandated tools and versions by customer program.
120 days before
- Compute peak concurrency, denials, solver hours and named-seat last use.
- Model reduced pools plus elastic burst against the cost of queue time.
90 days before
- Read reduction, true-up and notice clauses in every agreement.
- Request written renewal quotes at proposed quantities, with uplift caps for multi-year terms.
60 days before
- Benchmark quotes against a second reseller where the vendor sells through more than one.
- Confirm any licence model changes from vendor ownership changes in writing.
After renewal
- Keep telemetry running; review quarterly against program schedules.
Detroit-area suppliers can compare local staffing and CAD rates in the Michigan automotive rates guide; suppliers with engineering centers in India should see the Pune, Bengaluru and Hyderabad rate card.
08Run the numbers: cAD, PLM and simulation software license audit calculator
The same benchmarks as this sheet, with your inputs. Share link and printable brief open the full calculator page.
Benchmarks are typical 2025-2026 market ranges compiled by Engineer Aid, an independent desk not affiliated with the vendors named. Quotes vary by region, volume and timing; nothing here is legal, tax or engineering advice. Revised 2026-11-06.
Questions buyers ask
How much does a Siemens NX licence cost per year?
The house benchmark is about $11,500 per seat per year for NX Mach 1 to 3 role-based subscriptions, within a typical range of $9,200 to $16,500 or more. Value-based token pools commonly require minimum commitments of $25,000 to $60,000 a year. Quotes vary by configuration and seat count.
When is cloud burst cheaper than buying Ansys HPC packs?
As a rule of thumb, when a solver seat and its HPC pack run jobs fewer than about 28 hours a week. A base solver seat is about $22,000 a year and a 32-core HPC pack about $12,500. Check the vendor's metered rate and any monthly caps.
How do I measure whether we have too many floating CAD licences?
Pull 90 days of license server logs and compute peak concurrency and denials per product. A healthy floating pool runs at about 72% to 85% peak concurrency. Zero denials with low peak usage means the pool is larger than needed.
Can we reduce licence quantities at renewal?
Usually at renewal, but read the agreement first. Some contracts restrict mid-term reductions, require notice 60 to 90 days ahead, or reprice reduced quantities at a higher unit rate. Ask for written quotes at the new quantity before the notice period opens.
Does moving simulation to the cloud affect TISAX or OEM data rules?
Yes. A cloud burst provider that processes OEM prototype or confidential models comes into scope of your information security obligations, often assessed through TISAX. Confirm the provider's security posture, data location and the OEM's data rules before sending models.