Ripping up the rule book - specifications

  BMW X6 xDRIVE 35d Porsche Cayenne Diesel
On the road price/total as tested £44,535/£54,260 £39,404/£45,019
Residual value (after 3yrs/36,000) £22,401/50.3% N/A
Annual tax liability std/higher rate £3,117/£6,235 £2,758/£5,517
Annual fuel cost (12k/20k miles) £2,393/£3,988 £2,648/£4,414
Ins. grp./quote/road tax band/cost 47/£698/F/£210 N/A/N/A/G/£400
Cost of 1st/2nd/3rd service £995^ N/A
Length/wheelbase 4,877/2,933mm 4,798/2,885mm
Height/width 1,690/1,983mm 1,699/1,928mm
Engine 6cyl in-line/2,993cc V6/2,967cc
Peak power 282/4,400 bhp/rpm 237/4,000 bhp/rpm
Peak torque 580/1,750 Nm/rpm 550/2,000 Nm/rpm
Transmission 6-spd auto/4wd 6-spd Tiptronic/4wd
Fuel tank capacity/spare wheel 85 litres/run flats 100 litres/foam
Boot capacity (seats up/down) 570/1,450 litres 540/1,770 litres
Kerbweight/payload 2,110/600kg 2,240/775kg
Turning circle/drag coefficient 10.4 metres/0.33Cd 12.0 metres/0.35Cd
Basic warranty (miles)/recovery 3yrs (unltd)/3yrs 2yrs (unltd)/2yrs
Service intervals/UK dealers Variable/153 20,000 miles/34
Driver Power manufacturer/dealer pos. 6th/12th 4th/5th
Euro NCAP: Adult/child/ped./points N/A N/A
0-60/30-70mph 6.8/7.2 secs 7.4/7.2 secs
30-50mph in kickdown 3.0 secs 2.9 secs
50-70mph in kickdown 4.0 secs 4.3 secs
Top speed/rpm at 70mph 147mph/2,000rpm 133mph/2,100rpm
Braking 70-0/60-0/30-0mph 47.0/34.0/8.6m 51.0/37.0/9.5m*
Noise levels outside/idle/30/70mph 65/45/58/67dB 67/43/58/66dB
Auto Express economy/range 22.8mpg/426 miles 20.6mpg/453 miles
Govt urban/extra-urban/combined 26.9/36.8/34.0mpg 24.4/35.8/30.4mpg
Actual/claimed CO2/tax bracket 332/220g/km/35% 367/244g/km/35%
Airbags/Isofix/parking sensors Ten/yes/yes Six/yes/£527
Air-suspension/tow bar £2,250**/£600 £1,931/£442
Power-fold mirrors/heated seats £235/£295 Yes/£407
Sat-nav/aux-in/cruise control £1,805/yes/yes £2,048/£74/£287
Xenon lights/powered tailgate Yes/£380 £1,016/£415

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