Mechanical Engineering Tenders: How Mid-Sized Companies Win

Reading time: approx. 7 minutes

A mechanical engineering tender rarely fails because of the machine. It fails because of the bid: a missing proof of suitability, a reference that does not fit, a form that is still empty three days before the deadline. German mechanical engineering is dominated by mid-sized companies and is one of the country’s largest industrial employers, yet many of these companies treat public contracts as a tiresome obligation rather than a pipeline. This guide shows why that is a mistake and how you can shorten the process from discovery to submission.

Contents

1. Why a Mechanical Engineering Tender Takes So Much Time
2. The 2024 Procurement Market in Numbers
3. Which Procurement Rules Apply to Mechanical Engineering Firms
4. Five Pitfalls That Cost You Bids
5. How Industry-Trained AI Shortens the Bid Process
6. FAQ
7. Conclusion

Why a Mechanical Engineering Tender Takes So Much Time

The bottleneck is not in design but in documentation. A typical mechanical engineering tender requires technical specifications, proof of suitability, reference projects, details on delivery times, maintenance and spare parts supply, often spread across several forms with several dozen mandatory fields in total. The knowledge needed is available within the company, but fragmented: in old bids, in completed projects, in the heads of two or three people.

Every new tender therefore means searching, copying, adapting. A bid manager handling a recurring procurement procedure spends a large part of their time filling in fields they have already completed ten times in a similar form. This is exactly where time is lost: not in the actual professional decision, but in manually transferring known information into a new form.

Then there is inconsistency: when three departments work on one bid, wording, references and figures diverge. Contracting authorities notice this, and it costs points in the evaluation.

The 2024 Procurement Market in Numbers

Those who shy away from the effort overlook the size of the market. The official procurement statistics for the full year 2024 report 199,334 contracts with a contract volume of €135.2 billion, both the highest figures since records began in 2021.

What matters for mid-sized companies: 82 percent of these contracts, specifically 163,215 awards, went to small and medium-sized enterprises, with an SME volume of €56.3 billion. Public contracts are therefore not a domain reserved for large corporations.

Two further figures shape practice in mechanical engineering. First: around 88 percent of all reported contracts were below the EU thresholds, so day-to-day business takes place mainly under national procurement law. Second: in 63 percent of procedures, price was the sole award criterion, and in a further 12 percent price combined with quality. If you want to win a mechanical engineering tender, you therefore have to calculate your price precisely, and where quality counts, supply the required proofs without gaps. How the evaluation works in detail is explained in the article on award criteria.

Which Procurement Rules Apply to Mechanical Engineering Firms

Supplying a machine to a public contracting authority is, under procurement law, a supply contract. Which set of rules applies depends on the estimated contract value:

• Above the EU threshold the following applies to supply and service contracts: Public Procurement Ordinance (VgV), based on Part 4 of the Act against Restraints of Competition (GWB). The EU thresholds are adjusted every two years; you can find the current values in the overview of the EU thresholds 2026.
• Below the EU threshold supply and service contracts are generally governed by the Sub-Threshold Procurement Regulation (UVgO), depending on the respective federal state and its state procurement law.
• The VOB/A expressly concerns construction works and does not apply to pure machine supply. It only becomes relevant if your contract includes a construction element, such as a permanently installed plant with foundation work.

The underlying principles are set out in § 97 GWB: competition, transparency, economic efficiency and proportionality. Two sections decide your success in practice: § 122 GWB governs suitability: expertise, capability and reliability, which you must demonstrate with proofs. § 127 GWB provides that the contract is awarded to the most economically advantageous bid, assessed on the basis of the price-performance ratio announced in advance.

To get started on a specific procedure, it is worth beginning with a go/no-go assessment: Does the contract suit your company, and which documents really matter in the procurement documents?

A Practical Example

A metalworking company with around 300 employees bids to supply a CNC machining unit to a municipal enterprise. The estimated contract value is below the EU threshold, so the procedure runs under the UVgO. The procurement documents comprise a specification, a price sheet, three suitability forms and a reference request for comparable deliveries over the last three years.

The technical part is calculated in two hours, as the machine is standard. The remaining day and a half goes on gathering the proofs: the right reference from a project two years ago, the current tax clearance certificate, the declaration on collective-agreement compliance under state law, and consistent delivery times across all forms. Not a single one of these steps is technically demanding, but each takes time, and every error can lead to exclusion. This very ratio, little professional decision-making and a lot of transfer work, is the lever for reducing effort.

Five Pitfalls That Cost You Bids

1. Formal errors in proofs of suitability. If a required declaration or certificate is missing, exclusion looms, regardless of how good the machine is. Contracting authorities check the form first. What can still be submitted later is covered in the article on requests for missing documents.

2. References that do not fit the service. A reference for a comparable contract from the last three years is often required. Anyone who submits an unsuitable or outdated reference formally fails to meet the suitability criterion.

3. Inconsistent information between forms. If the technical section states a different delivery time from the price sheet, queries or point deductions follow.

4. Price sheets with calculation errors. Since price alone decides 63 percent of procedures, a single transfer error can tip the calculation, and the bid.

5. Reading the specification too late. Anyone who completes the bill of quantities latediscovers contradictions or unclear specifications too late to create clarity through a bidder question .

You can find the official figures and procurement reports of the federal government at the Federal Ministry for Economic Affairs and Energy , a useful source for assessing your own market.

How Industry-Trained AI Shortens the Bid Process

Most procurement tools stop at finding: they report suitable tenders and leave the rest to the bid manager. The real time sink, form filling, remains manual. aiconver starts at four points:

Finding. Instead of monitoring just one tender source, the platform aggregates across multiple generators. You see every relevant mechanical engineering tender, not just those from a single database.

Forecasting. A prediction model estimates which tender is likely to come up soon, including volume and expected award date. This lets you prepare references and calculations before the deadline starts running.

Filling in. The AI indexes your existing company knowledge (old bids, contracts, references, technical data sheets) and uses it to fill recurring mandatory fields. It does not require maintained templates that nobody keeps up to date anyway, but works with what is already there. In practice this saves 80 to 90 percent of the time spent filling in recurring fields. The reference customer Schmidt & Clemens has saved around 20 percent of effort this way.

Bidder questions. The platform suggests questions for the contracting authority that expose unclear or one-sidedly tailored specifications and thereby put competitors under pressure.

The key point for mechanical engineering: there is no one-size-fits-all AI. A bid for a machine tool is technically different from one for a conveyor system or a sweeper. aiconver trains its models for specific industries so that the AI understands the technical language and logic of your segment. All processing runs on German infrastructure, GDPR-compliant and 100 percent Made in Germany.

How the filling works in detail is shown in the guide Completing a tender.

FAQ

Which procurement regulation applies to the supply of a machine?

Supplying a machine to a public contracting authority is a supply contract. Above the EU threshold, the Public Procurement Ordinance (VgV) applies on the basis of the GWB; below it, generally the Sub-Threshold Procurement Regulation (UVgO) under state procurement law. The VOB/A concerns only construction works and does not apply to pure machine supply.

From what contract value does EU procurement law apply?

EU procurement law applies from the respectively valid EU threshold for supply and service contracts. These values are adjusted every two years by the EU Commission. Check the currently valid amount at the start of each procedure, as it determines whether the VgV or the UVgO applies.

How long does it take to prepare a mechanical engineering bid?

That depends on the scope of the procurement documents. Most of the time is consumed not by the technical calculation but by filling in recurring mandatory fields, proofs of suitability and forms. This very part can be shortened by 80 to 90 percent with industry-trained AI.

Is the use of AI in public tenders permitted?

Yes. What matters is that processing is GDPR-compliant and data sovereignty is maintained. aiconver processes data on German infrastructure, Made in Germany. Responsibility for the content of the bid remains with the bidder; the AI handles filling in and preparation, not the final decision.

Conclusion

Public contracts are a plannable sales channel for mechanical engineering: €135.2 billion in volume in 2024, 82 percent of contracts going to mid-sized companies. Anyone who wants to win a mechanical engineering tender rarely loses on the technology and almost always on the documentation: formal errors, unsuitable references and price sheets completed under time pressure. The procurement rules are clear: supply contract under the VgV or UVgO, suitability under § 122 GWB, award to the most economically advantageous bid under § 127 GWB. You solve the time sink of form filling by making existing company knowledge usable instead of gathering it afresh for every mechanical engineering tender.

aiconver GmbH, the AI platform for the manufacturing sector’s mid-sized companies. We find, evaluate, fill in and suggest bidder questions, trained for your specific industry, 100 percent Made in Germany.