Class 275

Updated: August 2026 – Class 275 covers four-axle diesel locomotives of the MaK/Vossloh G 1206 type – one of the most common designs in German freight traffic run by private operators. This page explains one thing above all: how to read everything you need for identification from the bodyshell and vehicle number, and why the same locomotive type appears under several class numbers.

What is Class 275?

Class 275 is a registration number for four-axle diesel-hydraulic locomotives of the G 1206 type, built in Kiel. Wheel arrangement B’B’, centre cab with a long and a short bonnet, maximum speed 100 km/h, deployed on freight trains, transfer runs and industrial traffic.

The key point to understand: the manufacturer’s type and the class number are two different things. The manufacturer calls the machine a G 1206. The German vehicle register assigns each individual vehicle to a class – depending on variant, fitting-out and the available number range. That’s why you’ll also find identical locomotives under Class 273 or directly under the type designation MaK G 1206.

Reading the twelve-digit vehicle number

For vehicles of private keepers, the number matters more than for any state railway class – it’s often the only reliable information on the vehicle. It follows a strict structure:

Section	Meaning	Example
First two digits	Vehicle type	92 stands for diesel locomotive
Next two digits	Country of registration	80 stands for Germany
Following digits	Class and serial number	Digit sequence 275 plus running number
Last digit	Check digit	calculated mathematically from the preceding digits
Appended marking	Keeper	country code plus the operator’s abbreviation

This lets you place a sighting completely without needing any list at all: vehicle type, country, class, individual vehicle and operator are all written on the side. The full system, including how to calculate the check digit, is explained in the article on the UIC number.

How to identify the bodyshell in the field

Where it fits into railway operations

The G 1206 fills a specific gap: too capable on the main line for a pure shunter, yet too slow and too light for heavy main-line duties. It’s exactly this in-between profile that makes it attractive to private operators, because a single machine covers several tasks. Accordingly, the range of keepers is wide – from small industrial railways to large port and freight operators such as Häfen und Güterverkehr Köln.

Typical duties include:

• Transfer runs between marshalling yard and siding, mostly on weekday mornings.
• Block trains over short distances, for example to ports, power stations or transhipment terminals.
• Shunting duties on a company’s own site or on private sidings.
• Engineering-train duties, when construction companies deploy their own vehicles.

The bodyshell follows directly from this task. A cab between two bonnets gives usable visibility in both directions of travel – important anywhere that involves frequent reversing, banking and shunting. Main-line locomotives with a full-length body are optimised for long runs in one direction and are more awkward to shunt with. For the same reason, classic shunting locomotives also have a raised cab and low bonnets: visibility beats aerodynamics. Once you’ve understood this logic, you can tell what an unfamiliar diesel locomotive was built for just from its silhouette – long before you can read the number.

For spotting, that means you won’t find these locomotives where the clock-face timetable runs, but at the edges of the network and in freight hubs. Because such workings don’t appear in the passenger timetable, community sightings and your own observation logs work better than any static research. The guide to the sighting logbook shows how to keep track of this in a structured way.

What changes and what stays the same

For vehicles of private keepers, almost everything changes except the technology. Operators, leasing arrangements, liveries, markings and areas of operation change constantly – sometimes several times within a few years. Any statement about them is a snapshot and should be given a date.

On top of that, individual vehicles can differ in detail even though they belong to the same class: retrofitted train protection systems, extra radio antennas, modified shunting steps, different buffer or frame designs, and approvals for further countries. Such retrofits happen vehicle by vehicle, often during a general overhaul. For identification purposes that means: differing details don’t argue against a class match – they’re the normal case for vehicles that have been in service with various operators over the years.

The wheel arrangement, body style, drive type and cab position stay constant. Your identification should be built on these features; everything else is additional information. If you want to apply this approach to any vehicle, the guide to identifying classes helps, explaining the order in which to check features. For the next size up in the same manufacturer family, it’s worth comparing with the Vossloh G 2000 BB.

Common mix-ups

Conclusion

Class 275 is less a single vehicle than an entry in the vehicle register – and that’s exactly why it’s instructive. Once you can read the twelve-digit number, you no longer need any class list: vehicle type, country, class and keeper are all written on the side. In the field, identify the bodyshell first, then read the number, and take the livery for what it is – a snapshot.