Adler Diplomat: Which Version to Buy and Why
The Adler Diplomat catalogue contains one generation, produced from 1934 to 1940 as a Sedan, so there is no choice between generations or body types in the supplied data. The real decision is among four entries carrying the same exact version name, 2.9 MT. They differ in output—60 hp or 65 hp—and in weight and maximum speed.
The Adler Diplomat catalogue contains one generation, produced from 1934 to 1940 as a Sedan, so there is no choice between generations or body types in the supplied data. The real decision is among four entries carrying the same exact version name, 2.9 MT. They differ in output—60 hp or 65 hp—and in weight and maximum speed. For easier identification, this guide refers to each one by its power and kerb weight while preserving the database name 2.9 MT.
Adler Diplomat generations compared
The 1 generation Adler Diplomat ran from 1934 to 1940. It was offered as a Sedan and contains four listed versions. Every version shares the same production period, engine displacement, basic engine configuration, transmission, drive layout, suspension description, and brake type. No separate restyling or later generation is identified in the supplied data.
Consequently, the available figures do not support claims that one Adler Diplomat model year introduced a different engine, gearbox, or chassis specification. Searches for an Adler Diplomat 1934 or Adler Diplomat 1935 may lead to cars from the same listed generation, but the data does not divide the four versions by individual model year.
Adler Diplomat engine and specs
All four 2.9 MT entries use a 2916 cc Gasoline engine with 6 cylinders in an Inline layout. The engine is front-mounted longitudinally, uses a Carburetor, and has no boost. Each cylinder has 2 valves. The compression ratio is 6.25, and the bore and stroke are 75 × 110. Every engine reaches its listed maximum power at 3300 rpm.
Because the version names are identical, power and kerb weight are essential when comparing them:
| Exact version name | Identifying specification | Power | Torque | Displacement | Fuel | Cylinders | Layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|---|---|
| 2.9 MT | 60 hp, 1710 kg | 60 hp / 44 kW at 3300 rpm | not measured | 2916 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
| 2.9 MT | 65 hp, 1710 kg | 65 hp / 48 kW at 3300 rpm | not measured | 2916 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
| 2.9 MT | 60 hp, 1665 kg | 60 hp / 44 kW at 3300 rpm | not measured | 2916 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
| 2.9 MT | 65 hp, 1665 kg | 65 hp / 48 kW at 3300 rpm | not measured | 2916 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
The 60 hp specification produces approximately 20.6 hp per litre, while the 65 hp specification produces approximately 22.3 hp per litre. The 65 hp versions therefore provide 5 hp more and about 8.3% greater output from the same 2916 cc displacement. Their listed power is also 4 kW higher.
These figures do not establish why the power outputs differ. Since the supplied specifications give both outputs the same displacement, compression ratio, bore and stroke, Carburetor system, and 3300 rpm power point, attributing the difference to a particular mechanical change would be speculation.
Adler Diplomat performance and economy
| Exact version name | Identifying specification | 0–100 km/h | Maximum speed | City consumption | Highway consumption | Combined consumption |
|---|---|---|---|---|---|---|
| 2.9 MT | 60 hp, 1710 kg | not measured | 100 km/h | not measured | not measured | not measured |
| 2.9 MT | 65 hp, 1710 kg | not measured | 100 km/h | not measured | not measured | not measured |
| 2.9 MT | 60 hp, 1665 kg | not measured | 105 km/h | not measured | not measured | not measured |
| 2.9 MT | 65 hp, 1665 kg | not measured | 105 km/h | not measured | not measured | not measured |
The maximum-speed difference follows the weight groups rather than the power ratings in this dataset. Both 1710 kg versions are listed at 100 km/h, whether they produce 60 hp or 65 hp. Both 1665 kg versions reach a listed 105 km/h, again regardless of whether output is 60 hp or 65 hp. The lighter pair is therefore 45 kg lighter and has a maximum speed 5 km/h higher than the heavier pair.
Acceleration to 100 km/h is not measured for any version. City, highway, and combined fuel consumption are also not measured, so an Adler Diplomat mpg comparison cannot be calculated from the supplied figures. Fuel-tank capacity and CO₂ output are not measured as well.
Adler Diplomat dimensions and weight
No exterior length, width, or height is supplied, so those Adler Diplomat dimensions are not measured in this dataset. The available comparison is limited to kerb and gross weight.
| Exact version name | Identifying specification | Kerb weight | Gross weight | Payload difference | Ground clearance | Fuel tank | Wheel sizes |
|---|---|---|---|---|---|---|---|
| 2.9 MT | 60 hp, 1710 kg | 1710 kg | 2430 kg | 720 kg | not measured | not measured | not measured |
| 2.9 MT | 65 hp, 1710 kg | 1710 kg | 2430 kg | 720 kg | not measured | not measured | not measured |
| 2.9 MT | 60 hp, 1665 kg | 1665 kg | 2210 kg | 545 kg | not measured | not measured | not measured |
| 2.9 MT | 65 hp, 1665 kg | 1665 kg | 2210 kg | 545 kg | not measured | not measured | not measured |
The 1710 kg versions have a gross-minus-kerb difference of 720 kg. The 1665 kg versions have a corresponding difference of 545 kg. Thus, the heavier specification provides 175 kg more difference between gross and kerb weight, while the lighter specification saves 45 kg in kerb weight.
Every version has Independent, leaf spring front suspension and Dependent, leaf spring rear suspension. Drum brakes are fitted at both the front and rear in all four entries. Ground clearance, tank capacity, and wheel sizes are not measured.
Which Adler Diplomat version should you buy?
On the supplied numbers alone, the strongest performance choice is the 2.9 MT with 65 hp and a 1665 kg kerb weight. It combines the highest listed output with the lower of the two kerb weights and the higher listed maximum speed of 105 km/h. Its weight-to-power figure is approximately 25.6 kg per hp.
The 2.9 MT with 60 hp and a 1665 kg kerb weight is the next-lightest performance option. It shares the 105 km/h maximum speed and 1665 kg kerb weight but has 5 hp less. Its weight-to-power figure is approximately 27.8 kg per hp, about 2.2 kg per hp higher than that of the lighter 65 hp version.
Among the 1710 kg cars, the 2.9 MT with 65 hp is preferable when power matters: it offers 5 hp more than the 60 hp version at exactly the same kerb weight, gross weight, and listed 100 km/h maximum speed. It achieves approximately 26.3 kg per hp, compared with 28.5 kg per hp for the 2.9 MT with 60 hp and 1710 kg.
The 2.9 MT with 60 hp and 1710 kg has the least favourable weight-to-power figure in the group, while the 2.9 MT with 65 hp and 1665 kg has the most favourable. The gap is approximately 2.9 kg per hp. However, the heavier cars have a 720 kg gross-minus-kerb difference rather than 545 kg, which may matter more than maximum speed when comparing their documented carrying margins.
There is no supplied price data, so it is impossible to say what the extra 5 hp costs or whether any version represents better monetary value. There are also no reliability, condition, parts, or maintenance records. For that reason, this catalogue comparison can rank only the specifications: choose the 65 hp, 1665 kg 2.9 MT for the best power-to-weight figure and highest listed speed; choose one of the 1710 kg cars if the larger gross-minus-kerb difference is the priority. Any Adler Diplomat for sale still needs to be judged on information beyond this dataset before a purchase decision is made.