Hummer H1

Hummer H1: which version to buy

Buy the 6.6 AT (305 hp) if the catalogue’s numbers are the only filter: it is the strongest Diesel in the Hummer H1 1 generation (March 1992–May 2006), SUV 5-doors, AWD, Automatic, 5 gears, 820 Nm at 1600 rpm, 6599 cm³, 8 cylinders, V-shaped, 4 valves per cylinder, Turbo.

Buy the 6.6 AT (305 hp) if the catalogue’s numbers are the only filter: it is the strongest Diesel in the Hummer H1 1 generation (March 1992–May 2006), SUV 5-doors, AWD, Automatic, 5 gears, 820 Nm at 1600 rpm, 6599 cm³, 8 cylinders, V-shaped, 4 valves per cylinder, Turbo. Against the lightest petrol 5.7 AT (190 hp) it adds 115 hp and 370 Nm; against the weakest diesel 6.2 AT (152 hp) it adds 153 hp and 481 Nm. Specific output is about 46.2 hp/l versus 33.1 hp/l on 5.7 AT (190 hp) and 24.4 hp/l on 6.2 AT (152 hp). At 2703 kg kerb weight that is about 8.9 kg/hp, the lowest mass-per-horsepower figure in this set. 0–100 km/h and top speed on 6.6 AT (305 hp) are not measured. There is only 1 generation, so the choice is between 13 listed versions (this table shows 12), not between generations.

Generations (what actually changes)

1 generation is the whole model: 1992-03-01 to 2006-05-31, SUV 5-doors, 13 versions in the database. No later generation exists in these data, so “what the next generation changed” is not measured. What does change is the stop date and a cluster of weights and gear counts inside the same generation.

Two production windows sit side by side. Four records run to 2006-05-31: 5.7 AT (190 hp, tank not measured), 6.5 AT (180 hp, 6500 cm³, tank not measured), 6.5 AT (195 hp, 6500 cm³), 6.6 AT (305 hp, tank not measured). The other eight stop on 2005-05-31. That is a 12-month gap in listed production, not a new generation.

Engines and specs (every named version)

All listed versions use Automatic and AWD. Cylinders are 8, layout V-shaped. Fuel consumption (city / highway / mixed), CO2, eco class, and wheel sizes are not measured on every row.

Engine placement is Front, longitudinal on 6.2 AT (152 hp), 6.5 AT (172 hp), 6.5 AT (197 hp), and 6.5 AT (208 hp). On the remaining versions it is not measured. Injection is Distributed injection (multi-point) on every 5.7 AT (190 hp); on diesels it is not measured. Front brakes are Disc on all listed versions; rear Disc is measured on 6.5 AT (195 hp), 6.2 AT (152 hp), 6.5 AT (172 hp), 6.5 AT (197 hp), 6.5 AT (208 hp) and not measured on the 5.7 AT rows, 6.5 AT (180 hp) rows, and both 6.6 AT (305 hp) rows. Front and rear suspension are Independent, spring on every version. Ground clearance is 406 mm on every version.

Which engine: gasoline 5.7 versus the diesel ladder

5.7 AT (190 hp) is the only Gasoline line. Displacement 5733 cm³, No boost, 2 valves per cylinder, 450 Nm at 2400 rpm. It is the lightest H1 here: 1818 kg kerb, 3245 kg gross — payload 1427 kg. It is also the fastest measured top speed: 143 km/h. 0–100 km/h is 15.5 s. Three catalogue rows share this name and this power; they differ by tank (95 l vs not measured) and by stop date (2006-05-31 vs 2005-05-31). Power, torque, mass, and 15.5 s / 143 km/h do not change between those three 5.7 AT (190 hp) rows.

The diesel ladder is seven distinct power figures under two names (6.2 AT, 6.5 AT, 6.6 AT):

• 6.2 AT (152 hp): 6217 cm³, No boost, 3-speed Automatic, 339 Nm at 2000 rpm, compression 21.5, bore/stroke 101 × 97. Lowest power and lowest torque in the file. Kerb 3090 kg → about 20.3 kg/hp, the heaviest per horsepower. Top speed 105 km/h. Gross weight not measured.
• 6.5 AT (172 hp): 6466 cm³, No boost, 393 Nm at 1700, compression 21.5, 103 × 97. Versus 6.2 AT (152 hp): +20 hp, +54 Nm, +1 gear (4 vs 3), top speed 134 vs 105 (+29 km/h). Kerb 3091 kg vs 3090 kg (+1 kg). Gross 4899 kg — payload 1808 kg, the largest measured payload.
• 6.5 AT (180 hp, 6500 cm³): Turbo, 366 Nm at 1700, compression 21.5, 102.9 × 97. Two rows: tank not measured to 2006-05-31 (0–100 not measured), and tank 95 l to 2005-05-31 (0–100 = 15.5 s). Both: top speed 105 km/h, kerb 2703 kg, gross 3720 kg, payload 1017 kg. Versus 6.5 AT (172 hp): +8 hp, but −27 Nm, −388 kg kerb, −1179 kg gross, and top speed 105 vs 134.
• 6.5 AT (195 hp, 6500 cm³): Turbo, 583 Nm at 1800, 18 s to 100 km/h, 134 km/h, 2703 / 3720 kg. Versus the 180 hp / 6500 turbo: +15 hp, +217 Nm, +29 km/h top speed; same kerb and gross. Versus 5.7 AT (190 hp): +5 hp, +133 Nm, +885 kg kerb, 0–100 slower by 2.5 s (18 vs 15.5), top speed 9 km/h lower (134 vs 143).
• 6.5 AT (197 hp, 6466 cm³): Turbo, 583 Nm at 1800, compression 20.2, 103 × 97, 134 km/h, 3091 / 4899 kg. Versus naturally aspirated 6.5 AT (172 hp) on the same 6466 cm³ block: +25 hp, +190 Nm, same 4 gears, same 134 km/h, same 3091 / 4899 kg. The turbo is the entire measured difference.
• 6.5 AT (208 hp, 6466 cm³): Turbo, 597 Nm at 1800, compression 20.2, 103 × 97, 134 km/h, 3271 / 4672 kg. Versus 6.5 AT (197 hp): +11 hp, +14 Nm, +180 kg kerb, −227 kg gross, payload 1401 kg vs 1808 kg. Peak diesel among the 6.5 AT nameplates, not among all H1 diesels.
• 6.6 AT (305 hp): 6599 cm³, Turbo, 4 valves per cylinder (every other version is 2), 5 gears (every other diesel except 6.2 AT is 4; 6.2 AT is 3), 820 Nm at 1600, compression 17.5, 103 × 99. Two rows: tank not measured to 2006-05-31, tank 95 l to 2005-05-31. Versus 6.5 AT (208 hp): +97 hp, +223 Nm, −568 kg kerb, −952 kg gross. Versus 6.5 AT (195 hp) on the same 2703 / 3720 kg chassis: +110 hp, +237 Nm, +1 gear.

Specific output (hp per litre of listed displacement): 6.6 AT (305 hp) ≈ 46.2; 5.7 AT (190 hp) ≈ 33.1; 6.5 AT (208 hp) ≈ 32.2; 6.5 AT (197 hp) ≈ 30.5; 6.5 AT (195 hp) ≈ 30.0; 6.5 AT (180 hp, 6500) ≈ 27.7; 6.5 AT (172 hp) ≈ 26.6; 6.2 AT (152 hp) ≈ 24.4.

Performance and mpg

Measured 0–100 km/h: 5.7 AT (190 hp) 15.5 s; 6.5 AT (180 hp, 6500, tank 95) 15.5 s; 6.5 AT (195 hp) 18 s. All other versions: not measured. So the petrol 5.7 AT (190 hp) and the 180 hp turbo diesel with tank 95 l share the best measured sprint; the 195 hp turbo is 2.5 s slower despite +15 hp and +217 Nm over that 180 hp diesel — and it is 885 kg heavier than the petrol.

Measured top speed: 143 km/h on every 5.7 AT (190 hp); 134 km/h on 6.5 AT (195 hp), 6.5 AT (172 hp), 6.5 AT (197 hp), 6.5 AT (208 hp); 105 km/h on 6.5 AT (180 hp, both 6500 rows) and 6.2 AT (152 hp). 6.6 AT (305 hp): not measured. The 38 km/h gap between 143 and 105 is the largest measured speed spread. 6.5 AT (180 hp) and 6.2 AT (152 hp) match at 105 km/h despite 28 hp and 27 Nm between them.

mpg / l/100 km (city, highway, mixed) is not measured for every version. Eco class and CO2 are not measured. A fuel-economy ranking cannot be built from this file.

Dimensions and weight (what the extra mass buys)

Ground clearance does not choose the car: 406 mm on all 12 shown versions. Wheel size is not measured on all.

Kerb-weight groups:

• 1818 kg: all 5.7 AT (190 hp). Lightest. Payload 1427 kg.
• 2703 kg: 6.5 AT (180 hp, 6500), 6.5 AT (195 hp), both 6.6 AT (305 hp). +885 kg vs petrol. Payload 1017 kg.
• 3090 kg: 6.2 AT (152 hp). Gross not measured, so payload not measured.
• 3091 kg: 6.5 AT (172 hp) and 6.5 AT (197 hp). Gross 4899 kg, payload 1808 kg — +381 kg vs petrol payload, +791 kg vs the 2703 kg diesels.
• 3271 kg: 6.5 AT (208 hp). Heaviest kerb. Gross 4672 kg, payload 1401 kg.

Mass per horsepower (kerb/hp): 6.6 AT (305 hp) ≈ 8.9 kg/hp; 5.7 AT (190 hp) ≈ 9.6; 6.5 AT (195 hp) ≈ 13.9; 6.5 AT (180 hp) ≈ 15.0; 6.5 AT (197 hp) ≈ 15.7; 6.5 AT (208 hp) ≈ 15.7; 6.5 AT (172 hp) ≈ 18.0; 6.2 AT (152 hp) ≈ 20.3.

Tank: 95 l on the 2005-stop cluster that lists it; not measured on the 2006-stop 5.7 AT (190 hp), 2006-stop 6.5 AT (180 hp), 2006-stop 6.6 AT (305 hp), and the third 5.7 AT (190 hp) to 2005-05-31. Do not treat a missing tank as a smaller tank.

Which version to choose

If the ranking is power, torque, gears, and kg/hp: 6.6 AT (305 hp). It is the only 5-speed, the only 4-valve-per-cylinder engine, the only 820 Nm, the only 305 hp. Take the row to 2006-05-31 if the extra listed year matters (tank not measured on that row); take the row to 2005-05-31 if a listed 95 l tank matters. Prices are not measured.

If the ranking is measured top speed and lowest kerb weight: 5.7 AT (190 hp). 143 km/h, 1818 kg, 15.5 s, Gasoline 92, No boost. Same three-way split: 2006-05-31 without tank, 2005-05-31 with 95 l, 2005-05-31 without tank. Specs that decide driving (hp, Nm, 0–100, speed, mass) are identical across those three names.

If the ranking is payload: 6.5 AT (172 hp) or 6.5 AT (197 hp), both 4899 kg gross and 1808 kg payload. The 197 hp turbo is +25 hp and +190 Nm at the same 3091 kg. 0–100 on both is not measured; top speed is the same 134 km/h.

If the ranking is a turbo 6.5 with measured 0–100 and the 2703 kg chassis: 6.5 AT (180 hp, 6500, tank 95) matches the petrol’s 15.5 s but is capped at 105 km/h. 6.5 AT (195 hp) on the same chassis is 18 s and 134 km/h. The 2006-stop 6.5 AT (180 hp) sibling has 0–100 not measured and tank not measured.

If the ranking is peak 6.5 power: 6.5 AT (208 hp) — 208 hp, 597 Nm, 3271 kg. It is 97 hp and 223 Nm behind 6.6 AT (305 hp) and 180 kg heavier than 6.5 AT (197 hp).

Avoid if the filter is kg/hp and gears: 6.2 AT (152 hp) — 3 speeds, No turbo, ≈ 20.3 kg/hp, 105 km/h, gross not measured. It is the floor of the diesel ladder, 153 hp and 481 Nm below 6.6 AT (305 hp).

Problems and reliability

Failure rates, service intervals, and known defects are not measured in this dataset. What is measured and missing: fuel use, CO2, eco class, wheels, and — on several strong versions — 0–100, top speed, tank, engine placement, rear brakes. Treat those blanks as not measured, not as proof that the part does not exist.

Short list: 6.6 AT (305 hp) for the numbers; 5.7 AT (190 hp) for measured speed and mass; 6.5 AT (197 hp) for payload plus turbo on 6466 cm³; 6.5 AT (172 hp) for the same payload without turbo; 6.2 AT (152 hp) only if the 3-speed naturally aspirated diesel is the requirement. One generation, 1992-03-01–2006-05-31, SUV 5-doors, AWD throughout.