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Porsche Boxster S vs rivals - specifications

Porsche Boxster S vs Mercedes SLK 55 AMG vs Audi TT RS Roadster

 Porsche Boxster SMercedes SLK 55 AMGAudi TT RS Roadster
On the road price/total as tested£45,384/£52,731£54,965/£63,470£49,180/£57,100
Residual value (after 3yrs/36,000)£25,642/56.5%£29,406/53.5%£25,475/51.8%
Depreciation£19,742£25,559£23,705
Annual tax liability std/higher rate£2,905/£5,809£3,158/£6,316£2,885/£5,769
Annual fuel cost (12k/20k miles)£2,443/£4,072£2,395/£3,991£2,949/£4,916
Ins. group/quote/road tax band/cost45/£1,035/K/£27047/£1,119/J/£25041/£758/J/£250
Cost of 1st/2nd/3rd service£480/£610/£480£390/£240/£390£42 a month/3yrs**
    
Length/wheelbase4,374/2,475mm4,134/2,430mm4,198/2,468mm
Height/width1,281/1,801mm1,301/1,810mm1,348/1,842mm
EngineFlat 6cyl/3,436ccV8/5,461cc5cyl in-line/2,480cc
Peak power/revs311/6,700 bhp/rpm415/6,800 bhp/rpm335/5,400 bhp/rpm
Peak torque/revs360/4,500 Nm/rpm540/4,500 Nm/rpm450/1,600 Nm/rpm
Transmission6-spd man/rwd7-spd auto/rwd7-spd S tronic/4wd
Fuel tank capacity/spare wheel64 litres/foam70 litres/foam60 litres/foam
Boot capacity (roof up/down)280 litres/N/A225/335 litres290 litres/N/A
Kerbweight/payload1,320/335kg1,690/220kg1,535/320kg
Turning circle/drag coefficient10.6 metres/0.31Cd10.5 metres/N/A10.7 metres/N/A
Basic warranty (miles)/recovery3yrs (unltd)/2yrs3yrs (unltd)/4yrs3yrs (60,000)/3yrs
Service intervals/UK dealers2yrs (20,000)/34Variable/136Variable/135
Driver Power manufacturer/dealer pos.9th/5th*8th/10th*15th/26th*
Euro NCAP: Adult/child/ped./starsN/AN/AN/A
    
0-60/30-70mph4.7/4.0 secs4.6/3.9 secs4.7/4.0 secs
30-50mph in 3rd/4th3.0/4.0 secs2.4/3.4 secs2.4/3.5 secs
50-70mph in 5th/6th4.8/5.8 secs4.7/6.5 secs4.4/5.6 secs
Top speed/rpm at 70mph173mph/2,500rpm155mph/2,000rpm155mph***/2,000rpm
Braking 70-0/60-0/30-0mph42.0/30.9/7.8 metres47.1/33.6/8.5 metres45.2/33.3/8.5 metres
Auto Express econ (mpg/mpl)/range29.7/6.6/418 miles30.3/6.7/467 miles24.6/5.5/325 miles
Noise 30mph/70mph/hood down/up64/74/63/70dB64/76/63/69dB66/74/65/73dB
Govt urban/extra-urban/combined23.2/40.9/32.1mpg23.5/45.6/33.6mpg22.8/44.1/32.8mpg
Govt urban/extra-urban/combined5.1/9.0/7.0mpl5.2/10.0/7.4mpl5.0/9.7/7.2mpl
Actual/claimed CO2/tax bracket220/206g/km/31%215/195g/km/29%265/199g/km/30%
    
Airbags/stop-start/adaptive dampersSix/yes/£971Six/yes/noFour/no/£1,175
Leather/heated/electric seatsYes/£283/£1,291Yes/yes/yesYes/yes/£740
Metallic paint/wind deflector/xenons£558/£182/yesYes/yes^/yes£510/yes/yes
Parking/tyre pressure sens/cruise ctrl£348/yes/£267£680^^/yes/yes£305/£75/£220
Sat-nav/Bluetooth connectivity/aux-in£2,141/£445/yesYes/yes/yes£1,525/£250/yes
 
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