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Should you hand a whole design to an outside firm?

Sadaf Masood

You can, if three things are settled before the statement of work is signed: what “end to end” actually lists as deliverables, who owns the data and what the firm may re-use, and who chooses the suppliers under the design. Handing out a whole design is no longer an unusual thing to do. Honda has given Tata Technologies an entire vehicle platform to engineer — petrol, hybrid and electric on one underbody — the first time it has trusted an outside Indian engineering firm with that job.

Bloomberg's Alisha Sachdev reported the programme on 6 August. Honda would not confirm it beyond saying the company “is always considering the possibility of various external partnerships”; Tata Technologies had described it three weeks earlier without naming anyone:

“A leading Japanese automotive OEM has selected Tata Technologies for a full vehicle engineering program, reinforcing our end-to-end vehicle engineering credentials, marking a scaled entry into the Japanese market.”

— Tata Technologies, first-quarter FY27 results release, 17 July 2026

The reasons Honda gave are ordinary ones. Its chief executive, Toshihiro Mibe, said in May that the company would “utilize external resources more flexibly and strategically”, citing the cost and the speed available from engineering talent in India and China, after Honda's first annual loss since 1948.

Scope: the label is not the deliverable list

“Full vehicle engineering programme” is four words covering hundreds of engineer-years. Before price, get the list: which releases, which analysis, how many prototype builds, whose sign-off closes each gate, and what the phrase explicitly excludes. In a fixed-price engineering contract the sentence that matters most is the one defining a change request, because everything not written into scope arrives later as one.

Data and re-use: say it in the contract, not the relationship

In the same quarterly release Tata Technologies named five other programmes: a $100 million partnership with Tenneco, a European luxury carmaker covering engineering, manufacturing, supply chain and purchasing, a North American industrial equipment maker, and two further European automotive engagements. The firm drawing your product is drawing your competitors' too. That is normal in engineering services, and it is exactly why the contract has to state what is yours: the CAD and simulation models, the test data, the methods developed on your money, and what may be re-used in a generic form.

Sourcing follows the drawing office

Once a platform is drawn outside, everything under it becomes formally purchasable, and the suppliers asked first are the ones near the people drawing it. Honda's new family of cars arrives from 2028, with India expanded as a manufacturing and export hub serving Latin America and Southeast Asia. If your existing supply base matters — a tool room that knows your tolerances, a foundry you have already qualified — name it in the statement of work as a constraint on the design. Otherwise the design arrives with someone else's suppliers implied in every fastener, tolerance and process note, and requalifying them afterwards costs more than specifying them at the start.

One thing this does settle: an outside firm doing your engineering is a supplier like any other, and a supplier is judged on what comes back and when. That applies at the scale of a platform and at the scale of a single part.

If what you need made is the part rather than the programme, Vesprr Workshop takes a drawing and returns a first article. Send the drawing and the quantity and you get a price and a date against it.

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