What is a military motorcycle worth?

Updated: August 2026

A fully restored, roadworthy Wehrmachtsgespann (Wehrmacht motorcycle combination) — a BMW R75 or Zündapp KS750 with sidecar — is worth around 30,000 to 92,000 euros today as a guide price, with real auction results of 30,000 to 33,000 euros forming the lower guide value. The Zündapp KS750 has tended to achieve higher prices than the technically very similar BMW R75 for some years now, because collectors rate it as more robust and authentic. Roadworthy but not fully restored examples are considerably lower; for unrestored barn finds or projects there is currently no solid, up-to-date comparable value — these are assessed case by case, and the price depends on the specific piece. Lighter military motorcycles without a sidecar, such as a DKW, sit in a completely different, much lower price bracket, and are mentioned here only for comparison.

Source: see the table below

Guide prices by version and condition

All figures are guide prices based on real market data from a specialist dealer focused on Wehrmachtsgespanne, as well as real auction results (as of August 2026). For vehicles of this scale, condition, original parts, restoration quality and documentation can make a difference of several tens of thousands of euros — a remote assessment by photo cannot replace an in-person inspection here.

For comparison, outside this table: a lighter military motorcycle without a sidecar from the same period — a DKW NZ 350, for example — was hammered down unrestored for 7.360 euros at Dorotheum in 2020. This shows that the sidecar with its driven, lockable wheel is a major value driver for these combinations, not an accessory.

Source: fahrzeuge.dorotheum.com (DKW NZ 350-1, 1944, Zuschlag 29.08.2020: 7.360 €), retrieved 2026-08-28

What further pushes the value up: a fully original and consistent combination of frame and engine (see below), a complete vehicle history with papers, a properly documented restoration, and, where available, matching frame and engine numbers against the paperwork.

Original or fake?

With Wehrmachtsgespanne, crude fakes are less of an issue than with small decorations — the real danger is mixed vehicles, where parts from both models have been assembled together over the decades without this being mentioned in the listing. Five checkpoints we look at:

1. Crankshaft stroke. The original KS750 crankshaft has an 85 mm stroke. Anyone who removes the spark plug to measure and finds only 78 mm is looking at a converted BMW R75 crankshaft with a shortened crankcase — a classic mixed part between the two models. Source: wehrmachtsgespann.de (Merkblatt Nr. 41: Original-Hub 85 mm, 78 mm = umgebaute BMW-Welle), retrieved 2026-08-28
2. Crankshaft construction, not just its measurement. Even a "pressed" (assembled rather than forged in one piece) crankshaft can measure the correct 85 mm and still not be an original shaft — it weighs around 30% more and accelerates noticeably worse. The measurement alone proves nothing. Source: wehrmachtsgespann.de, retrieved 2026-08-28
3. Condition under the valve cover. For an engine advertised as "fully overhauled", it's worth looking at the rocker arms and cylinder head under the valve cover — this reveals whether the overhaul actually went deep or was only cosmetic. Source: wehrmachtsgespann.de, retrieved 2026-08-28
4. Frame type matching the model. The BMW R75 and Zündapp KS750 differ structurally: the BMW has a tubular frame with ball bearings, the Zündapp a box-section frame with needle bearings. A vehicle whose frame type doesn't match the rest of the mechanicals is a sign of a vehicle assembled from individual parts rather than a factory-original combination. Source: history1945.de (Rohrrahmen/Kugellager bei BMW, Kastenrahmen/Nadellager bei Zündapp), retrieved 2026-08-28
5. Matching frame and engine numbers against the papers. For documented auction vehicles such as the Bonhams lot, the frame and engine numbers are explicitly stated and checked. If these numbers don't match the vehicle registration document, or are missing altogether, that is a standard warning sign for a historic vehicle, which we investigate before every purchase.

For a vehicle of this scale, we always inspect it in person, not just from photos — for five- to six-figure values, this is the standard and, for you, the safe way to proceed.

Brief historical background

The Zündapp KS750 and the BMW R75 were developed in parallel for the Wehrmacht and built between 1941 and 1944, with nearly identical technical specifications: a 745 cm³ boxer engine with 26 hp (19 kW), a weight of around 400 kg, and a top speed of 90 to 100 km/h. Both models were intended to use largely interchangeable parts — a deliberate simplification for the wartime economy, even though the frame and bearings of the two makes remained structurally different.

Both models were built in similar numbers: around 18,635 Zündapp KS750 between 1941 and 1944 (288 in 1941, 7,228 in 1942, 7,131 in 1943, 3,515 in 1944), and around 16,500 BMW R75, manufactured at the Eisenach plant, until Allied bombing raids halted production in 1944, leaving the target of 20,200 units unreached.

The combinations were used mainly not in direct combat, but as despatch and reconnaissance vehicles: thanks to the driven, lockable sidecar wheel — technically unusual for the time — they could carry three soldiers with equipment even over difficult terrain, where an ordinary motorcycle without sidecar drive would have got stuck.

Selling without risk

Antique Militaria is a Spanish collectors' house buying throughout Germany. For vehicles in this class, we always inspect condition, numbers and papers in person before making a binding offer — just as we do with larger estates and collections. Our own holdings already include documented sidecar combinations, both BMW and Zündapp.

Here's how it works:

1. Send photos via WhatsApp to +34 665 164 779 — an overall view, the frame and engine numbers, the condition of the sidecar and its drive, and any papers you have. Two minutes, no obligation.
2. Free initial assessment within 24 hours. If there's interest, we then arrange an in-person inspection to conclusively check authenticity and condition.
3. Payment as agreed, in cash or by bank transfer, on handover of the vehicle.

You don't need to commit to anything before the price is settled, and you don't have to sell if you don't like the offer.

Frequently asked questions

What is a Zündapp KS750 with sidecar worth?

As a guide price, 33.000 to 92.000 euros for a fully restored, roadworthy combination — depending on condition, originality and documentation. Examples that are not fully restored are lower; we assess unrestored projects case by case.

Source: see the table above

What is a BMW R75 with sidecar worth?

As a guide price, 30.000 to 82.000 euros for a fully restored, roadworthy combination. An example built in 1944 was hammered down for 30.000 euros at Dorotheum in 2025 — marking the lower price bracket for a restored vehicle.

Source: see the table above

Is a Zündapp KS750 worth more than a BMW R75?

Tending yes, for comparable condition: the Zündapp KS750 has on average priced above the BMW R75 for some years now, because collectors rate it as more robust and closer to original condition. However, the difference is considerably smaller than the influence of condition and restoration quality.

How do I tell whether a Wehrmachtsgespann is original or a mixed vehicle?

From the crankshaft (85 mm stroke on the KS750, forged rather than pressed construction), the condition under the valve cover, the frame type matching the model, and whether the frame and engine numbers match the papers. We always check this in person.

What is an unrestored military motorcycle worth?

Considerably less than a restored example — for the roadworthy but not fully restored condition, we have an older market reference of around 18.000 euros. For genuine barn finds and projects there is currently no solid, up-to-date comparable figure; here we assess from photos and an inspection on a case-by-case basis.

Source: see the table above

May you own and sell a military motorcycle from the 1933-1945 period in Germany?

Yes. Owning and selling historic vehicles is legal in Germany regardless of the year of manufacture. For use on public roads, the general registration and classic-vehicle regulations apply, as with any other historic vehicle.

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