BMW 6 Series vs M635 CSi - specifications

 BMW 640dBMW M635 Csi
On the road price/total as tested£66,745/£80,080£33,875 (1984)/N/A
Residual value (after 3yrs/36k miles)£33,873/50.8%N/A
Annual tax liability std/higher rate£2,929/£5,857N/A
Annual fuel cost (12k/20k miles)£2,045/£3,409£2,521/£4,201
Insurance group/quote48/£1,106N/A/£744
Road tax band/annual costF/£130N/A/£215
Cost of 1st/2nd/3rd service£400 (5yrs/60k)Will vary
Engine6cyl in-line/2,993cc6cyl in-line/3,453cc
Peak power/revs 309/4,400 bhp/rpm286/6,500 bhp/rpm
Peak torque/revs 630/1,500 Nm/rpm334/4,500 Nm/rpm
Transmission 8-spd auto/rwd5-spd man/rwd
Fuel tank capacity/spare wheel70 litres/run-flat70 litres/full-size
Boot capacity (seats up) 460 litres335 litres
Turning circle/drag coefficient11.7 metres/0.31 Cd11.7 metres/0.39Cd
Basic warranty/recovery3yrs (unltd)/1yrN/A
Service intervals/UK dealersVariable miles/154Variable miles/154
Driver Power manufacturer/dealer pos9th/18th9th/18th
0-60/30-70mph5.4/4.8 secs6.3 secs/N/A
30-50mph in 3rd/4th2.1/2.6 secsN/A
50-70mph 5th/6th/7th/8th3.5/4.4/5.4/7.4 secsN/A
Top speed/rpm at 70mph 155mph/1,650rpm158mph/N/A
Braking 70-0/60-0/30-0mph 50.2/35.1/8.9mN/A
Noise levels outside/idle/30/70mph65/41/56/65dBN/A
Auto Express economy/range37.2mpg/573 miles29.1mpg/448 miles
Govt urban/extra-urban/combined 42.2/58.9/51.4mpg17.1/36.2/29.1mpg
Actual/claimed CO2/tax bracket203/145g/km/22%224g/km/N/A/N/A
Airbags/elec windows/rear park sensorsSix/yes/yesNo/yes/no
Air-conditioning/leather/heated seatsYes/yes/yesYes/yes/no
Auto gearbox/stability/cruise controlYes/yes/yesNo/no/no
Metallic paint/xenon lights/keyless goYes/yes/yesYes/no/no
Sat-nav/USB connection/BluetoothYes/yes/yesNo/no/no

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