BMW X6 M

BMW X6 M: which version to buy, and why the numbers differ

The BMW X6 M in this catalogue is a five-door SUV (SUV 5-doors) with a turbocharged 4395 cm³ gasoline V-shaped 8-cylinder engine, Automatic gearbox and AWD across every listed version.

The BMW X6 M in this catalogue is a five-door SUV (SUV 5-doors) with a turbocharged 4395 cm³ gasoline V-shaped 8-cylinder engine, Automatic gearbox and AWD across every listed version. The useful choice is not “which generation number,” but which 4.4 calibration you actually need: the first-generation 4.4 AT Steptronic at 555 hp, the second-generation 4.4 AT xDrive Steptronic at 575 hp, the third-generation 4.4 AT xDrive Steptronic at 600 hp or 625 hp, or the current 4.4 V8 MHEV M xDrive M Steptronic at 625 hp. Those names must stay exact — two third-generation cars share the same 4.4 AT xDrive Steptronic label and are only told apart by 600 hp versus 625 hp.

People looking up BMW X6 M Competition, M60i, M50i, M40i or M60 will not find those names in this dataset. What is here is the X6 M itself, generation by generation, with horsepower, torque, weight and fuel use that can be compared by arithmetic.

Generations (restyling stays with its generation)

1 generation (2009-01-01 – 2014-12-31), including 1 generation, restyling. Body: SUV 5-doors. Two listed versions, both named 4.4 AT Steptronic, both 555 hp (408 kW) at 6000 rpm, both 680 Nm, both 6-speed Automatic, AWD. The pre-restyling car (2009-01-01 – 2012-12-31) makes 680 Nm from 1500–5650 rpm, uses distributed injection (multi-point), compression 9.3, bore and stroke 89 × 88.3, tank 85 L, kerb 2380 kg, gross 2905 kg, ground clearance 180 mm, CO2 325 g/km, Euro 5, wheels 275/40 R20 and 315/35 R20. The restyling (2012-01-01 – 2014-12-31) keeps 555 hp and 680 Nm but quotes peak torque at 5650 rpm only; compression, bore/stroke and CO2 are not measured; gross weight rises to 3000 kg; clearance rises to 212 mm. Same engine size, same 4.7 s to 100 km/h, same 250 km/h, same 19.3 / 10.8 / 13.9 L/100 km.

2 generation (2015-04-01 – 2019-12-31). One version: 4.4 AT xDrive Steptronic, 575 hp (423 kW) at 6000–6500 rpm, 750 Nm at 2200–5000 rpm. Direct injection (direct), compression 10, bore and stroke 89 × 88.3, 8-speed Automatic, AWD, 95 fuel, Euro 6. This is the lightest X6 M in the file at 2265 kg kerb, with the lowest mixed consumption (11.1 L/100 km) and the lowest CO2 (258 g/km). Rear suspension is independent, pneumatic; front is independent, spring. Wheels 285/40 R20 and 325/35 R20. Clearance 195 mm.

3 generation (2019-01-01 – present), including 3 generation, restyling 1. Body still SUV 5-doors. Pre-restyling (2019-01-01 – 2023-02-28) has two 4.4 AT xDrive Steptronic cars: 600 hp (441 kW) and 625 hp (460 kW), both 750 Nm, both 8-speed Automatic, AWD, 98 fuel, Euro 6, kerb 2295 kg, tank 83 L, clearance 213 mm, wheels 295/35 R21 and 315/35 R21. Restyling 1 from 2023-03-01 (stop not measured) is a different name: 4.4 V8 MHEV M xDrive M Steptronic, 625 hp (459 kW) at 6000 rpm, 750 Nm at 1800 rpm, 8-speed Automatic, AWD, 95 fuel, mixed 12.9 L/100 km, CO2 292 g/km, kerb 2370 kg, gross 3040 kg, clearance 212 mm. City, highway, tank, eco class and wheels are not measured on the MHEV.

Engine specs: same 4395 cm³, four power steps

Every engine in the data is Gasoline, 8 cylinders, V-shaped, 4 valves per cylinder, Turbo, front, longitudinal, 4395 cm³. Fuel system and output are what actually change.

Power per litre (hp ÷ 4.395 L): 4.4 AT Steptronic 555 hp → 126.3 hp/L; 4.4 AT xDrive Steptronic 575 hp → 130.8 hp/L; 4.4 AT xDrive Steptronic 600 hp → 136.5 hp/L; both 625 hp cars → 142.2 hp/L. The jump from 555 to 625 hp is +70 hp, or +12.6%, on the same displacement.

Torque: first generation 680 Nm; every later car 750 Nm (+70 Nm, +10.3%). The 625 hp 4.4 AT xDrive Steptronic holds 750 Nm to 5800 rpm versus 5600 rpm on the 600 hp twin — a 200 rpm wider plateau at the same peak. The MHEV lists 750 Nm at 1800 rpm only (upper end not measured).

Engine code, engine oil spec, and a separate “engine name” beyond the version strings above are not measured in this file.

Horsepower by year window (what the searches map to)

There is no separate 2024/2025 horsepower figure. Mapping the production windows:

• 2009–2014 (including 2011, 2012, 2013, 2014 specs): 4.4 AT Steptronic, 555 hp, 680 Nm.
• 2015–2019 (including 2016, 2017, 2018): 4.4 AT xDrive Steptronic, 575 hp, 750 Nm.
• 2019–2023 (including 2020, 2021, 2022): 4.4 AT xDrive Steptronic at 600 hp or 625 hp, both 750 Nm.
• From 2023-03-01: 4.4 V8 MHEV M xDrive M Steptronic, 625 hp (459 kW — 1 kW less than the 460 kW 625 hp pre-restyling twin).

Performance and fuel (mpg-style numbers as L/100 km)

Top speed is 250 km/h on every row. The 0–100 spread is 0.9 s from slowest (4.7) to fastest (3.8). The 625 hp 4.4 AT xDrive Steptronic is 0.1 s quicker than the 600 hp car and 0.1 s quicker than the later MHEV at the same 625 hp headline. Mixed consumption is lowest on the 575 hp second generation (11.1), highest on first generation (13.9). Third generation mixed 12.7 is 1.6 L/100 km more than second generation; MHEV mixed 12.9 is 0.2 more than the 2019–2023 pair. City and highway on the MHEV are not measured.

Weight kg, clearance, tank, wheels (dimensions that decide daily use)

Kerb weight per horsepower:

• 4.4 AT Steptronic 2380 kg / 555 hp = 4.29 kg/hp (heaviest per hp).
• 4.4 AT xDrive Steptronic 575 hp: 2265 / 575 = 3.94 kg/hp (lightest car, 115 kg below first gen).
• 4.4 AT xDrive Steptronic 600 hp: 2295 / 600 = 3.83 kg/hp.
• 4.4 AT xDrive Steptronic 625 hp: 2295 / 625 = 3.67 kg/hp (best ratio in the file).
• 4.4 V8 MHEV M xDrive M Steptronic: 2370 / 625 = 3.79 kg/hp — 75 kg heavier than the 2019–2023 625 hp car, so the ratio worsens despite equal horsepower.

Gross weight: first gen 2905 kg, restyling 3000 kg (+95 kg payload capacity on paper), second gen 2950 kg, third gen 3000 kg, MHEV 3040 kg (highest).

Ground clearance: first gen 180 mm → restyling 212 mm (+32 mm) → second gen 195 mm → third gen 213 mm → MHEV 212 mm. The 2012–2014 restyling already recovered almost all of the later third-generation height.

Tank: 85 L on both first-generation cars and the 575 hp car; 83 L on both 4.4 AT xDrive Steptronic 2019–2023 cars; not measured on the MHEV.

Wheels: 20-inch staggered sets on gen 1 (275/40 R20 + 315/35 R20) and gen 2 (285/40 R20 + 325/35 R20); 21-inch on gen 3 (295/35 R21 + 315/35 R21); not measured on MHEV.

Brakes are ventilated disc front and disc ventilated rear on every version. Front suspension is independent, spring throughout. Rear is independent, spring except the 575 hp car (independent, pneumatic).

Which version to choose

If you want the lowest fuel use and the lightest kerb in the catalogue: 4.4 AT xDrive Steptronic 575 hp (2 generation, 2015-04-01 – 2019-12-31). Mixed 11.1 L/100 km, city 14.7, highway 9, CO2 258 g/km, 2265 kg, 95 fuel, 8 gears, 4.2 s. You give up 50 hp versus the later 625 hp cars and 0.4 s versus the fastest 0–100, but you gain 2.8 L/100 km mixed versus first generation and 1.6 versus the 600/625 hp twins. This is also the only pneumatic rear axle in the file.

If you want the best power-to-weight and the shortest 0–100: 4.4 AT xDrive Steptronic at 625 hp (2019–2023), not the later MHEV. Same 2295 kg as the 600 hp twin, 25 hp more, 3.8 s versus 3.9 s, torque plateau to 5800 rpm versus 5600. Fuel, tank, wheels, clearance and CO2 are identical between the two 4.4 AT xDrive Steptronic cars — the extra 25 hp does not show up as extra consumption in this dataset. The 600 hp car is the same hardware envelope with 25 hp less and 0.1 s slower; choose it only if that specific 600 hp listing is the car in front of you.

If you want current production and 95 fuel instead of 98: 4.4 V8 MHEV M xDrive M Steptronic. Same 625 hp class as the 2019–2023 625 hp car, but 459 kW versus 460 kW, 3.9 s not 3.8 s, mixed 12.9 not 12.7, kerb 2370 kg (+75 kg), gross 3040 kg. City, highway, tank, eco class and wheels are not measured — you cannot claim a fuel or tyre advantage that is not in the file. Compression 10.5 versus 10 on the 2019–2023 pair.

If you need first-generation years (2009–2014 specs, including 2011–2014 searches): only 4.4 AT Steptronic 555 hp exists. Buy the 2009–2012 car if you need the wide torque band (1500–5650 rpm), measured CO2 (325 g/km), compression 9.3 and 89 × 88.3 bore/stroke. Buy the 2012–2014 restyling if you want 212 mm clearance and 3000 kg gross; accept that compression, bore/stroke and CO2 are not measured, and that 0–100 (4.7 s), mixed 13.9 L/100 km, 6 gears and 2380 kg kerb do not improve. Payload on the restyling is 3000 − 2380 = 620 kg versus 2905 − 2380 = 525 kg on the earlier car (+95 kg).

What later generations actually buy in numbers (not price — prices are not in the data): +20 hp and +70 Nm and two extra gears from gen 1 to gen 2; −115 kg kerb; −2.8 L/100 km mixed; −67 g/km CO2; 0–100 −0.5 s; fuel 95 instead of 98; pneumatic rear. Gen 3 versus gen 2: +25 or +50 hp, same 750 Nm, 0–100 −0.3 or −0.4 s, but heavier (+30 kg), thirstier (+1.6 mixed), higher CO2 (+31), smaller tank (−2 L), 98 fuel again, 21-inch wheels, spring rear instead of pneumatic. MHEV versus 2019–2023 625 hp: same hp class, slower 0–100 by 0.1 s, heavier, 95 fuel, mixed slightly worse, several fields not measured.

Reliability and typical problems are not measured in this dataset; do not infer them from the spec table. Competition / M60i / M50i / M40i names are not rows here — if a listing uses those names, match it to the exact 4.4 string and the hp figure above, or it is a different catalogue page.