Porsche 911 Cabriolet vs Audi R8 Spyder - specifications

  Porsche 911 Carrera S Cabrio PDK Audi R8 Spyder 4.2 FSI
On the road price/total as tested £92,127/£98,683 £96,625/£101,895
Residual value (after 3yrs/36,000) £44,037/47.8% £56,332/58.3%
Depreciation £48,090 £40,293
Annual tax liability std/higher rate £5,867/£11,734 £6,688/£13,376
Annual fuel cost (12k/20k miles) £3,102/£5,170 £4,389/£7,315
Insurance group/road tax band/cost 50/K/£270 50/M/£475
Cost of 1st/2nd/3rd service £480/£610/£480 £106 per month*
Length/wheelbase 4,491/2,450mm 4,431/2,650mm
Height/width 1,292/1,808mm 1,244/1,904mm
Engine Flat-six/3,800cc V8/4,163cc
Peak power/revs 395/7,400 bhp/rpm 424/7,900 bhp/rpm
Peak torque/revs 440/5,600 Nm/rpm 430/4,500 Nm/rpm
Transmission 7-spd PDK/rwd 6-spd manual/4WD
Fuel tank capacity/spare wheel 64 litres/sealant 80 litres/sealant
Boot capacity 135 litres 100 litres
Kerbweight/payload 1,485/420kg 1,660/300kg
Turning circle/drag coefficient 11.1 metres/0.30Cd 11.4 metres/0.34Cd
Basic warranty (miles)/recovery 2yrs (unltd)/2yrs 3yrs (60k)/3yrs
Service intervals/UK dealers 18,000 (2yrs)/34 Variable/135
Driver Power manufacturer/dealer pos. 9th/5th^ 15th/26th^
Euro NCAP: Adult/child/ped./stars N/A N/A
0-60/30-70mph 4.1/3.5 secs 4.7/4.6 secs
30-50mph in 3rd/4th 3.2/4.7 secs 2.8/4.1 secs
50-70mph in 5th/6th 5.6/7.3 secs 4.9/7.0 secs
Top speed/rpm at 70mph 187mph/1,800rpm 186mph/3,000rpm
Braking 70-0/60-0/30-0mph 44.1/32.4/8.0m 43.6/32.3/8.2m
Noise 30/70mph roof up/down 63/72/66/75dB 62/72/66/75dB
Auto Express economy/range 24.9mpg/351 miles 17.6mpg/430 miles
Govt urban/extra-urban/combined 22.8/40.9/31.7mpg 13.3/27.4/19.6mpg
Govt urban/extra-urban/combined 5.0/9.0/7.0mpl 262/210g/km/33% 2.9/6.0/4.3mpl
Actual/claimed CO2/tax bracket 430/337g/km/35%
Six/£121/£243
Airbags/Isofix/parking sensors £5,787/yes Four/yes/£640
Ceramic brakes/adaptive dampers Yes/yes/£320 £7,295/£1,380
Climate control/leather/heated seats £801/£267/yes Yes/yes/yes
Metallic paint/cruise control/xenons Yes/yes/£445 Yes/£220/yes
Sat-nav/USB connection/Bluetooth £1,840/£255/yes

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