Volvo 120 Series

Volvo 120 Series: which version to buy and why

There is only one generation of the Volvo 120 Series (1956–1970), a Coupe with nine listed versions, so the buying choice is not “which generation” but which 1.6 MT, 1.8 MT, or 2.0 MT match of power, gearbox, suspension, and measured weight. All nine use Gasoline, an Inline 4 with 2 valves per cylinder, a Carburetor, Manual, RWD, and Drum brakes front and rear.

There is only one generation of the Volvo 120 Series (1956–1970), a Coupe with nine listed versions, so the buying choice is not “which generation” but which 1.6 MT, 1.8 MT, or 2.0 MT match of power, gearbox, suspension, and measured weight. All nine use Gasoline, an Inline 4 with 2 valves per cylinder, a Carburetor, Manual, RWD, and Drum brakes front and rear. The spread that actually changes the car is 60–100 hp (40 hp, +67% from the weakest to the strongest), 111–157 Nm, 3 or 4 gears, front suspension that is either Dependent, spring or Independent, spring, and kerb weight that is measured on three cars only: 1150 kg on the 2.0 MT 100 hp and 1270 kg on two 1.8 MT 90 hp cars plus one 1.8 MT 75 hp.

Which 120 Series generation to choose

The catalogue lists 1 generation, key 6121, from 1956-01-01 to 1970-12-31, body Coupe, 9 versions. There is no later generation to trade against, and no restyling listed as a separate generation. If you want a 120 Series at all, you are choosing inside this one Coupe run. What did change between versions inside that generation is front suspension (Dependent, spring on five cars, Independent, spring on four), gearbox count (3 or 4), displacement (1582, 1778, 1782, or 1986 cm³), and how hard the engine is tuned (compression 7.5 to 10.1). Those differences are the whole decision.

Volvo 120 Series engine and gearbox: the nine versions compared

Use the names exactly as listed. Where several rows share 1.8 MT or 2.0 MT, split them by horsepower (and, when power also matches, by gearbox, tank, kerb, or front suspension).

Boost is not measured on every row. Fuel type in the data is Gasoline; a separate fuel-grade field is not measured.

Specific output (hp per litre of listed displacement):

• 1.8 MT 96 hp: 96 / 1.782 ≈ 53.9 hp/l — highest specific output in the set.
• 1.8 MT 90 hp (both 1778 cm³ cars): 90 / 1.778 ≈ 50.6 hp/l.
• 2.0 MT 100 hp: 100 / 1.986 ≈ 50.4 hp/l — almost the same specific output as the 90 hp 1.8, with 208 cm³ more (1986 − 1778).
• 1.8 MT 75 hp (all three 1782 cm³ cars): 75 / 1.782 ≈ 42.1 hp/l.
• 2.0 MT 82 hp: 82 / 1.986 ≈ 41.3 hp/l — the least specific 2.0, 18 hp below the 100 hp 2.0 MT (100 − 82).
• 1.6 MT 60 hp: 60 / 1.582 ≈ 37.9 hp/l — the lowest specific output.

Compression ratio tracks that ranking: 1.8 MT 96 hp is 10.1, 2.0 MT 100 hp is 9.5, most 1.8 and the 82 hp 2.0 are 8.7, 1.6 MT 60 hp is 7.5. Bore × stroke is 79.3 × 80 on the 1.6, 84.2 × 80 on every 1.8, 88.9 × 80 on both 2.0 cars. Stroke is 80 mm on all nine; displacement grows by bore only.

Torque peaks:

• Highest torque: 2.0 MT 82 hp at 157 Nm @ 2300.
• Next: 2.0 MT 100 hp at 152 Nm @ 3500 (5 Nm less, 1200 rpm later).
• 1.8 MT 96 hp: 145 Nm @ 3500.
• Both 1.8 MT 90 hp cars: 142 Nm @ 3200.
• All three 1.8 MT 75 hp cars: 142 Nm @ 2300 — same peak as the 90 hp cars, 900 rpm earlier.
• 1.6 MT 60 hp: 111 Nm @ 2500 — 31 Nm below the 75 hp 1.8 (142 − 111).

So the 82 hp 2.0 MT is the torque car, not the power car. The 100 hp 2.0 MT is the power car of the 2.0 pair and still 5 Nm below the 82 hp tune. The 96 hp 1.8 MT is the most highly stressed 1.8 (10.1 compression, 5600 rpm for peak power). The 75 hp 1.8 MT cars share 142 Nm with the 90 hp cars but lose 15 hp and, on the measured 3-speed car, lose 2.4 s and 10 km/h (see below).

120 Series specs: 0–100, top speed, mpg

Fuel consumption city, highway, mixed, CO2, and eco class are not measured on all nine versions. There is no mpg figure in the data; do not invent one.

Measured 0–100 km/h exists on three rows only:

• 1.8 MT 90 hp, Dependent, spring front, tank 45 l: 14 s, top speed 160 km/h.
• 1.8 MT 90 hp, Independent, spring front, tank not measured: 14 s, top speed 160 km/h.
• 1.8 MT 75 hp, Independent, spring front, 0–100 measured: 16.4 s, top speed 150 km/h.

The 90 hp 1.8 MT is 2.4 s quicker to 100 km/h than that 75 hp 1.8 MT (16.4 − 14) and 10 km/h faster at the top (160 − 150). Both 90 hp cars that have a 0–100 figure also have kerb 1270 kg, so they are the same mass in the data; the 2.4 s gap is not a weight gap on these three rows.

The 1.8 MT 96 hp has top speed 175 km/h and 0–100 not measured. That is 15 km/h above the 90 hp cars (175 − 160) and 25 km/h above the measured 75 hp car (175 − 150). It is the fastest listed top speed in the catalogue.

Not measured for 0–100: 1.8 MT 75 hp Dependent 3-speed; 1.8 MT 96 hp; both 2.0 MT; 1.6 MT 60 hp; 1.8 MT 75 hp Independent with tank 45 l. Not measured for top speed: the same list except the 96 hp 1.8 MT (175 km/h is listed).

Dimensions, weight, and tank: what is actually on the sheet

Gross weight, ground clearance, and wheel size are not measured on every version. Body type is Coupe for the generation; no length/width/height fields are in the data.

Kerb weight is measured three times:

• 2.0 MT 100 hp: 1150 kg.
• 1.8 MT 90 hp, Dependent, spring, tank 45 l: 1270 kg.
• 1.8 MT 90 hp, Independent, spring, tank not measured: 1270 kg.
• 1.8 MT 75 hp, Independent, 0–100 measured: 1270 kg.

The 100 hp 2.0 MT is 120 kg lighter than those 1.8 cars (1270 − 1150). Power-to-weight where both numbers exist:

• 2.0 MT 100 hp: 1150 / 100 = 11.5 kg/hp.
• 1.8 MT 90 hp (either 1270 kg car): 1270 / 90 ≈ 14.1 kg/hp.
• 1.8 MT 75 hp at 1270 kg: 1270 / 75 ≈ 16.9 kg/hp.

The 100 hp 2.0 MT carries about 2.6 kg less per horsepower than the 90 hp 1.8 MT (14.1 − 11.5) and about 5.4 kg less per horsepower than the measured 75 hp 1.8 MT (16.9 − 11.5). That is the strongest weight argument in the data. Kerb is not measured on: 1.8 MT 75 hp Dependent; 1.8 MT 96 hp; 2.0 MT 82 hp; 1.6 MT 60 hp; 1.8 MT 75 hp Independent with tank 45 l. Do not assume those cars are 1150 kg or 1270 kg.

Tank: 45 l on seven versions. Tank not measured on the Independent-front 1.8 MT 90 hp and on the Independent-front 1.8 MT 75 hp that has the 16.4 s figure.

Front suspension split (rear is Dependent, spring on all nine):

• Dependent, spring front: 1.8 MT 90 hp (45 l tank), 1.8 MT 75 hp Dependent 3-speed, 1.8 MT 96 hp, 2.0 MT 100 hp, 2.0 MT 82 hp.
• Independent, spring front: 1.6 MT 60 hp, 1.8 MT 75 hp Independent tank 45 l, 1.8 MT 90 hp Independent, 1.8 MT 75 hp with 16.4 s.

If the front-axle layout is a buying filter, you cannot take the 100 hp 2.0 MT and Independent front together: that 2.0 is listed Dependent, spring at both ends. Independent front in this data is the 1.6 and three of the 1.8 cars, not the 2.0 pair.

Which Volvo 120 Series version to buy

If you want the most power and the best measured kg/hp: take the 2.0 MT 100 hp. It is the peak of the set at 100 hp / 74 kW @ 5500, 152 Nm @ 3500, 1986 cm³, compression 9.5, Manual 4, RWD, kerb 1150 kg, tank 45 l. Versus the 90 hp 1.8 MT it adds 10 hp (100 − 90), 10 Nm (152 − 142), 208 cm³ versus 1778, and subtracts 120 kg where both kerbs are listed. Versus the 82 hp 2.0 MT it adds 18 hp (100 − 82) and 0.8 compression point (9.5 − 8.7) while giving up 5 Nm (157 − 152) and 1200 rpm of torque peak (3500 vs 2300). 0–100 and top speed for this 100 hp car are not measured.

If you want peak torque at low rpm, not peak horsepower: take the 2.0 MT 82 hp. 157 Nm @ 2300 is the catalogue maximum; 82 hp @ 4800 is 18 hp below the other 2.0. Same 1986 cm³, same Manual 4, same Dependent, spring, same Drum, same 45 l tank. Kerb, 0–100, and top speed are not measured. You are buying 75 mm more bore than the 1.6 (88.9 vs 79.3) and 46 Nm more than the 1.6 (157 − 111), with specific output only 41.3 hp/l.

If you want the strongest 1.8 and the highest listed top speed: take the 1.8 MT 96 hp. 96 hp / 71 kW @ 5600, 145 Nm @ 3500, 1782 cm³, compression 10.1 (highest), Manual 4, 175 km/h. Versus the 90 hp 1.8 MT that is +6 hp, +3 Nm, +800 rpm on the power peak (5600 vs 5000), +1.4 compression (10.1 − 8.7), and +15 km/h top speed. Versus the 100 hp 2.0 MT it is 4 hp down (100 − 96) and 7 Nm down (152 − 145) with 204 cm³ less (1986 − 1782) and 53.9 vs 50.4 hp/l. Kerb and 0–100 are not measured. Front suspension is Dependent, spring.

If you want a measured 14 s / 160 km/h 1.8 with four gears: either 1.8 MT 90 hp. Both are 90 hp / 66 kW @ 5000, 142 Nm @ 3200, 1778 cm³, compression 8.7, Manual 4, 14 s, 160 km/h, kerb 1270 kg. They are not the same car in the catalogue: one has Dependent, spring front and a 45 l tank; the other has Independent, spring front and tank not measured. Choose the Dependent-front 90 hp if you want the tank figure on the sheet; choose the Independent-front 90 hp if that axle layout is the filter. Arithmetic between them on power, torque, 0–100, top speed, and kerb is zero: they match.

If you want a 3-speed 1.8 and will accept the only measured slow 1.8: the 1.8 MT 75 hp with Independent, spring front and 16.4 s / 150 km/h / 1270 kg. Versus the 90 hp 1.8 MT at the same 1270 kg you lose 15 hp (90 − 75), one gear (4 vs 3), 2.4 s, and 10 km/h. Torque is the same 142 Nm, 900 rpm earlier (2300 vs 3200). Tank is not measured on this row.

The other two 1.8 MT 75 hp cars are the same 75 hp / 55 kW @ 5000, 142 Nm @ 2300, 1782 cm³, 8.7, Manual 3, RWD. Distinguish them: one is Dependent, spring front with tank 45 l and 0–100/top/kerb not measured; one is Independent, spring front with tank 45 l and 0–100/top/kerb not measured. Neither has the 16.4 s figure. Do not treat all three 75 hp 1.8 MT rows as one car.

If you want the smallest engine and Independent front: the 1.6 MT 60 hp. 60 hp / 44 kW @ 4500, 111 Nm @ 2500, 1582 cm³, compression 7.5 (lowest), 79.3 × 80, Manual 3, Independent, spring front, Dependent, spring rear, tank 45 l. Versus the 75 hp 1.8 MT that is −15 hp, −31 Nm, −200 cm³ (1782 − 1582), −1.2 compression (8.7 − 7.5). Versus the 100 hp 2.0 MT that is −40 hp, −41 Nm, −404 cm³ (1986 − 1582). 0–100, top speed, and kerb are not measured. This is the low-compression, low-specific-output end of the Coupe.

What “the extra displacement” buys, in numbers only (no prices in the data): moving from 1.6 MT 60 hp to 1.8 MT 75 hp buys 15 hp and 31 Nm and 200 cm³ at the same 3-speed Manual. Moving from 1.8 MT 75 hp to 1.8 MT 90 hp buys 15 hp and a fourth gear and, where both are measured, 2.4 s and 10 km/h, with torque unchanged at 142 Nm. Moving from 1.8 MT 90 hp to 1.8 MT 96 hp buys 6 hp, 3 Nm, 15 km/h top speed, and 1.4 more compression, still at 1.8 litres. Moving from 1.8 MT 96 hp to 2.0 MT 100 hp buys 4 hp, 7 Nm, 204 cm³, and — only if you compare with the 1270 kg 1.8 cars — a 120 kg lighter listed kerb on the 100 hp 2.0. Moving from 2.0 MT 100 hp to 2.0 MT 82 hp does not buy power; it buys 5 Nm and a 1200 rpm earlier torque peak and costs 18 hp.

Reliability, problems, and asking prices are not in this dataset; they are not measured here. The version names to keep as anchors remain 1.6 MT, 1.8 MT, and 2.0 MT, split by 60 / 75 / 90 / 96 hp on the 1.6–1.8 cars and by 82 / 100 hp on the 2.0 cars.