Alfa Romeo 1900: which version to choose

If you are choosing an Alfa Romeo 1900 from the catalogue, the decision is not between generations. There is 1 generation (1950–1959), Coupe body, and 2 versions: 1.9 MT and 2.0 MT. Both are Gasoline, 4 Inline, 2 valves per cylinder, No boost, Front, longitudinal, Carburetor, Manual with 4 gears, RWD, Independent, spring front suspension, and Drum front brakes.

If you are choosing an Alfa Romeo 1900 from the catalogue, the decision is not between generations. There is 1 generation (1950–1959), Coupe body, and 2 versions: 1.9 MT and 2.0 MT. Both are Gasoline, 4 Inline, 2 valves per cylinder, No boost, Front, longitudinal, Carburetor, Manual with 4 gears, RWD, Independent, spring front suspension, and Drum front brakes. The extra you get by stepping from 1.9 MT to 2.0 MT is 24 hp and 19 kW on 91 cm³ more displacement. Acceleration to 100 km/h, top speed, fuel use, weights, tank, ground clearance, and wheels are not measured for either version, so they cannot decide the purchase.

People search for Alfa Romeo 1900 Super Sprint, Zagato, CSS, 1900C, SSZ, Speciale, Berlina, Sprint, SS, Matta, Super, and M. Those names are not separate rows in this dataset. The two named versions below are the only ones you can match to numbers here.

Alfa Romeo 1900 specs: two versions, one generation

Both 1.9 MT and 2.0 MT start 1950-01-01 and stop 1959-12-31. There is no later generation that changes drive, gearbox type, cylinder count, or boost. Choosing a year inside 1950–1959 does not, on this data, switch you from one mechanical family to another. The choice is the version name.

Shared and therefore not a reason to pick one over the other:

If a listing promises a different cylinder layout, automatic gearbox, or all-wheel drive, it is not matching these two catalogue rows.

Alfa Romeo 1900 engine: 1.9 MT versus 2.0 MT

1.9 MT is 1884 cm³, 91 hp, 67 kW. Bore and stroke are 82.55 × 88. Compression ratio is not measured.

2.0 MT is 1975 cm³, 115 hp, 86 kW. Bore and stroke are not measured. Compression ratio is not measured.

Displacement gap: 1975 − 1884 = 91 cm³. That is about 4.8% more capacity (91 / 1884). Power gap: 115 − 91 = 24 hp, about 26.4% more (24 / 91). In kilowatts: 86 − 67 = 19 kW, about 28.4% more (19 / 67).

Specific output (hp per litre of the stated displacement):

The 2.0 MT is not only larger; it is denser in power by about 9.9 hp/l (58.2 − 48.3). Per 100 cm³ of extra capacity you gain about 26.4 hp of the 24 hp difference spread on 91 cm³ — in other words the extra 91 cm³ “buys” the full 24 hp and 19 kW difference recorded in the data.

Power per cylinder (4 cylinders in both):

Difference: 6 hp per cylinder. Kilowatts per cylinder: 67 / 4 = 16.75 kW versus 86 / 4 = 21.5 kW, a gap of 4.75 kW per cylinder.

Because boost is No on both, that extra output is not a turbo or supercharger step in this table. Because both use Carburetor and the same 4 Inline layout, the catalogue does not give a different fuel system or a different cylinder count as the reason for the 24 hp. The measured differences you can cite are displacement (1884 vs 1975) and the two power figures.

Bore and stroke exist only for 1.9 MT (82.55 × 88). You cannot compare stroke or bore to 2.0 MT; for 2.0 MT those values are not measured. Do not assume the 2.0 is a bored or stroked 1.9 from this file.

Alfa Romeo 1900 motor and gearbox: what does not change

Both versions are Manual with 4 gears and RWD. There is no Automatic row and no extra gear. If you want more ratios or a different drive, this generation does not offer it in the data.

Engine placement is Front, longitudinal on 1.9 MT and 2.0 MT. Chassis-side figures that often separate “which to buy” on later cars are empty here: kerb weight not measured, gross weight not measured, so kg per hp cannot be calculated for either version. Ground clearance not measured. Wheels not measured. Tank not measured.

Front brakes are Drum on both; rear brakes not measured on both. Front suspension Independent, spring on both; rear not measured on both. Chassis and brakes therefore do not pick a winner between 1.9 MT and 2.0 MT.

Performance and economy: not measured, so they cannot pick the car

For 1.9 MT: 0–100 is not measured; top speed is not measured; city, highway, and combined consumption are not measured; CO2 is not measured; eco class is not measured.

For 2.0 MT: the same fields are not measured.

You cannot say the 2.0 MT is quicker to 100 km/h or thirstier. The 24 hp and 19 kW gap is real; the time and mpg gap is not in the file. Search interest in “mpg” and “specs” should be answered that way: power is measured; speed, sprint, and fuel use are not measured.

Torque is not measured for 1.9 MT or 2.0 MT, so you also cannot rank them on Newton-metres or on rpm where peak torque arrives.

Dimensions and weight: not measured on both

Kerb weight: not measured (1.9 MT, 2.0 MT). Gross weight: not measured. Ground clearance: not measured. Fuel tank: not measured. Wheel sizes: not measured.

Power-to-weight is therefore not a number you can compute. A buyer who needs a weight or a wheel size is not choosing between these two rows; the catalogue does not give those figures for either.

Body type is Coupe for the one generation. There is no second body type in the data to trade against the Coupe.

Generations: there is only one to compare

1 generation, years 1950–1959, Coupe, 2 versions. No restyling generation is listed. Nothing in the file shows a later generation that added gears, changed drive from RWD, or switched from Drum front brakes.

So “which generation” is not a fork. The fork is 1.9 MT vs 2.0 MT inside that generation.

Which version to choose

Choose 1.9 MT if the measured engine size you want is 1884 cm³ and 91 hp / 67 kW, and you need the only bore and stroke in the set: 82.55 × 88. You accept 48.3 hp/l specific output and 22.75 hp per cylinder. You get the same Manual 4, RWD, Gasoline, 4 Inline, 2 valves per cylinder, No boost, Front, longitudinal, Carburetor, Independent, spring front, Drum front as the other row. You do not get a measured 0–100, top speed, consumption, weight, tank, or wheels — those are not measured.

Choose 2.0 MT if you want the higher measured outputs: 115 hp and 86 kW from 1975 cm³. Versus 1.9 MT that is +24 hp, +19 kW, +91 cm³, about +26.4% power for about +4.8% capacity, and about +9.9 hp/l specific output (58.2 vs 48.3). You do not get a measured bore and stroke (not measured). You still do not get 0–100, top speed, mpg, weight, or tank (not measured). Gearbox, drive, fuel type, cylinder count, layout, boost, and front brakes do not change.

Do not choose between them on price. Sale prices are not in this dataset. Searches for Alfa Romeo 1900 for sale, Super Sprint for sale, Zagato for sale, CSS for sale, Berlina, Sprint, SS, Matta, Super, or M are outside these two named versions. If a car is labelled Super Sprint, Zagato, CSS, 1900C, SSZ, Speciale, or similar, match it to 1.9 MT or 2.0 MT only when its stated power and displacement match 91 hp / 1884 cm³ or 115 hp / 1975 cm³. Two cars with the same marketing nickname are not distinguished here except by those numbers.

Practical ranking from the numbers only

1. More measured power: 2.0 MT (115 hp, 86 kW) over 1.9 MT (91 hp, 67 kW). 2. More measured displacement: 2.0 MT (1975) over 1.9 MT (1884). 3. Higher specific output: 2.0 MT (~58.2 hp/l) over 1.9 MT (~48.3 hp/l). 4. Documented bore and stroke: only 1.9 MT (82.55 × 88). 5. Everything else used to split “which to buy” on other models — 0–100, top speed, consumption, kerb weight, kg/hp, tank, clearance, wheels, torque — is not measured for 1.9 MT and not measured for 2.0 MT.

That is the whole choice: one generation, Coupe, two Manual RWD Gasoline 4 Inline versions, and a 24 hp / 91 cm³ step from 1.9 MT to 2.0 MT.