Fun seekers - specifications

 Audi TT Roadster 3.2Porsche BoxsterNissan 350Z Roadster GTMercedes SLK 350
On the road price/total as tested"£31,535/£35,545""£33,170/£42,653""£30,495/£32,495""£35,430/£42,935"
"Residual value (after 3yrs/36,000)""£17,029/54 per cent ""£17,215/51.9 per cent""£15,613/51.2 per cent""£20,443/57.7 per cent"
Contract hire per month£577£673£485£634
Annual tax liability std/higher rate"£2,428/£4,415""£2,335/£4,246""£2,348/£4,269""£2,728/£4,960"
Running costs (pence per mile)78.486.775.884.9
Insurance group/quote 18/N/A18/£72619/£65318/£677
Cost of 1st/2nd/3rd service£320/£370/£320£370/£507/£370£205/£270/£205£186/£277/£600
Length/wheelbase "4,178/2,468mm""4,329/2,415mm""4,315/2,650mm""4,082/2,430mm"
Engine"V6/3,189cc""Flat 6/2,687cc""V6/3,498cc""V6/3,498cc"
Peak power"247/6,300 bhp/rpm""245/6,500 bhp/rpm""296/6,400 bhp/rpm""272/6,000 bhp/rpm"
Peak torque"320/2,500 Nm/rpm""273/4,600 Nm/rpm""353/4,800 Nm/rpm""350/2,400 Nm/rpm"
Transmission"6spd, man/4wd ""5spd, man/rwd ""6spd, man/rwd""6spd, man/rwd"
Fuel tank capacity/spare wheel 60 litres/foam sealant64 litres/foam sealant80 litres/space saver70 litres/space saver
Roof-down boot capacity250 litres"150lt (front), 130lt (rear)"130 litres208 litres (roof up: 300)
Turning circle/drag coefficient11.0 metres/0.33Cd11.1 metres/0.29Cd11.3 metres/0.34Cd10.5 metres/0.32Cd
Basic warranty (mileage)/recovery3yrs (unltd)/3yrs2yrs (unltd)/2yrs"3yrs (60,000)/1yr"3yrs (unltd)/30yrs
Service intervals/UK dealers Variable/133"20,000 miles/32""9,000 miles/225""15,500 miles/169"
0-60/0-100mph6.0/16.8 secs 5.9/15.1 secs6.0/14.8 secs 5.8/13.9 secs
30-70 thru gears 5.8 secs5.2 secs5.3 secs5.1 secs
30-50 in 3rd/4th 3.1/4.3 secs4.1/5.8 secs3.5/4.8 secs2.8/4.1 secs
50-70 in 5th/6th 5.8/8.0 secs8.3 secs/N/A6.3/9.5 secs5.2/7.0 secs
Top speed 155mph (limited)159mph155mph (limited)155mph (limited)
Braking 70-0/60-0/30-0mph 46.8/34.7/8.8m44.6/33.1/8.7m48.3/35.4/9.3m49.3/35.9/9.2m
Noise levels outside/idle/30/70mph62/70/63/73dB64/74/64/78dB63/72/65/74dB61/70/63/77dB
Time to lower/raise roof16.8/13.2 secs12.5/10.1 secs17.7/16.9 secs20.9/19.6 secs
Auto Express economy/range23.5mpg/310 miles26.3mpg/370 miles22.4mpg/394 miles22.4mpg/345 miles
Govt urban/extra-urban/combined 19.1/36.2/27.2mpg20.5/41.5/30.4mpg16.6/31.0/23.5mpg18.2/35.3/26.5mpg
CO2 emissions/tax bracket250g/km/35 per cent229g/km/32 per cent288g/km/35 per cent255g/km/35 per cent
Airbags/parking/rain sensorsFour/£300/£450§Six/£325/£353Four/£350/noSix/£605/£90
Air con/clim con/leather/heated seatsYes/yes/yes/yes"Y/£308/£1,879/£269"Yes/yes/yes/yesYes/£435/£920/£320
Auto gearbox/stability/cruise control"£1,400/yes/£215""£1,760/yes/£294"No/yes/yes"£1,610/yes/yes"
Powered roof/hard top/wind deflectorYes/no/yes"Yes/£1,498/£217"Yes/no/yesYes/yes/yes (fabric)
Met paint/xenon lights/folding mirrors£500/£975/£450§£570/£705/no£450/yes/yes£620/£730/£195
Sat nav/CD changer/MP3/Bluetooth"£1,650/y/y/£385""£1,921/£348/n/£523""£1,200/yes/no/n""£1,990/£360/£172/£355"

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