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Mercedes SLS Roadster vs Porsche 911 - specifications

 Mercedes SLS AMG RoadsterPorsche 911 Turbo Cabrio PDK
On the road price/total as tested£176,895/£195,865£120,403/£124,926
Residual value (after 3yrs/36,000)£76,949/43.5%£45,272/37.6%
Depreciation£99,946£75,131
Annual tax liability std/higher rate£12,309/£24,618£8,354/£16,709
Annual fuel cost (12k/20k miles)£4,236/£7,060£3,496/£5,826
Ins group/quote/road tax band/cost50/N/A/M/£46050/N/A/M/£460
Cost of 1st/2nd/3rd serviceN/A£550/£1,250/£550
Length/wheelbase4,638/2,680mm4,450/2,350mm
Height/width1,261/1,939mm1,300/1,852mm
EngineV8/6,208ccFlat-six/3,800cc
Peak power/revs 563/6,800 bhp/rpm493/6,000 bhp/rpm
Peak torque/revs 650/4,750 Nm/rpm650*/1,950Nm/rpm
Transmission 7-spd dual-clutch/rwd7-spd dual-clutch/4wd
Fuel tank capacity/spare wheel85 litres/sealant67 litres/sealant
Boot capacity 173 litres105 litres
Kerbweight/payload1,735/225kg1,670/350kg
Turning circle/drag coefficient11.9 metres/N/A10.9 metres/0.32Cd
Basic warranty/recovery3yrs unltd/30yrs2yrs unltd/2yrs
Service intervals/UK dealersVariable/136Variable/34
Driver Power manufacturer/dealer pos.10th/10th5th/5th
Euro NCAP: Adult/child/ped./starsN/AN/A
0-60/30-70mph4.2^/3.0 secs3.1/2.6 secs
30-50mph 3rd/4th2.1/2.9 secs1.9/2.9 secs
50-70mph 5th/6th/7th3.6/5.0 secs/N/A3.0/3.9/6.7 secs
Top speed/rpm at 70mph 197mph/2,400rpm194mph/2,000rpm
Braking 70-0/60-0/30-0mph 54.6/40.9/10.2m^45.2/33.2/8.3m
Noise level roof up 30/70/down 30/7059/67/62/72dB64/71/66/77dB
Auto Express economy/range17.0mpg/318 miles20.6mpg/304 miles
Govt urban/extra-urban/combined 14.2/30.4/21.4mpg16.9/34.4/24.6mpg
Actual/claimed CO2/tax bracket384/308g/km/35%317/270g/km/35%
Airbags/parking sensors/cameraEight/yes/yesSix/£238/no
Adaptive dampers/stability/cruise ctrlNo/yes/yesYes/yes/£299
Memory/leather/heated seatsYes/yes/yes£688/yes/£295
Met. paint/xenons/tyre pressure sensYes/yes/yesYes/yes/yes
Sat-nav/USB connection/BluetoothYes/yes/yesYes/yes/yes
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