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Infiniti Q50 vs rivals

We see if the new Q50 can help Infiniti take the fight to the compact exec establishment

You’ve probably seen Infiniti branding on the Red Bull Formula One cars, but have you ever seen an Infiniti on the road? While Nissan’s luxury division is as big as Lexus in the US, it’s yet to make an impact here.

Infiniti Q50 review

BMW 3 Series review

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Lexus IS review

The new Q50 compact executive aims to change that. This rear-wheel-drive saloon is intended to take sales from established brands by offering efficient diesel power, a generous amount of standard equipment and a driving experience that mixes comfort with good handling.

That sounds similar to our current class champ, the BMW 3 Series. So we’ve put the Q50 Premium against the 320d Sport, as well as lining up Lexus’ IS 300h. The hybrid IS has temptingly low running costs and shows that an ambitious Japanese brand can be a contender.


On the road The BMW strikes a great balance between comfort and handling, and while the suspension is on the firm side, it’s more composed than the Infiniti’s over bumps. The Lexus shows the Q50 a clean pair of heels for comfort, too. Although the IS 300’s driving experience is pretty lifeless, it’s a great motorway cruiser – there’s hardly any cabin noise, and the suspension soaks up bumps well.

Company costs

With emissions of 114g/km, the Q50 sits one tax bracket below the BMW, at 17 per cent. That means it’s marginally cheaper to run – but if you really want to save some cash, choose the Lexus. It sits in the 12 per cent band, and its annual tax liability is £500 less for top-rate payers.

Build quality

In most respects, the Infiniti is just as well built as its rivals, but it’s perceived quality that disappoints. The bootlid is lightly sprung,so it slams shut with minimal effort, and some welds are clearly visible around the rear window.

Worth Considering

If you don’t want to go German or Japanese, then your only option is the S60. For £30,000, you get a top-spec R-Design with the new 181bhp, 99g/km diesel engine.

1st place - BMW

Another challenger is sent packing by the 3 Series. While the Infiniti has lower company-car costs, the 320d is much better to drive, faster, roomier and more comfortable (despite its noisy diesel). It’s cheaper to buy, and everyday running costs remain low.

2nd place - Lexus

The IS 300h isn’t involving to drive like the BMW, but it’s an accomplished cruiser, thanks to its hybrid drive and comfortable interior. And if you’re after a company car, then it’s a great choice, with far lower bills than either rival here.

3rd place - Infiniti

The Q50d is comfortably outperformed by its rivals here. It’s well built and equipped, but let down by an unrefined diesel, ponderous chassis and unsettled suspension. Company costs are lower than the BMW’s, yet the Lexus’ are better still.

   BMW  Lexus  Infiniti Q50  
   320d Sport IS 300h Luxury2.2d Premium
On-the-road price/total as tested£29,775/£40,240£30,995/£35,900£30,350/£38,110
Residual value (after 3yrs/30,000)£13,280/44.6%£13,390/43.2%£11,563/38.1%
Depreciation £16,495 £17,605 £18,787 
Annual tax liability std/higher rate£1,057/£2,114£743/£1,485£1,030/£2,060
Annual fuel cost (12k/20k miles)£1,658/£2,764£1,513/£2,521£1,767/£2,945
Ins. group/quote/road tax band/cost31/£411/C/£3032/£414/B/£2040/£480/C/£30
Cost of 1st/2nd/3rd service£425 (5yrs/50k)£773 (3yrs) £300/£360/£300
Length/wheelbase 4,624/2,810mm4,665/2,800mm4,790/2,850mm
Height/width 1.429/1,811mm1,430/1,810mm1,445/1,820mm
Engine  4cyl in-line/1,995cc4cyl in-line/2,494cc4cyl in-line/2,143cc
Peak power   182/4,000 bhp/rpm220/6,000 bhp/rpm168/3,200 bhp/rpm
Peak torque  380/1,750 Nm/rpm221/4,200 Nm/rpm400/1,600 Nm/rpm
Transmission  6-spd man/rwdeCVT/rwd 6-spd man/rwd
Fuel tank capacity/spare wheel57 litres/run-flats66 litres/repair kit74 litres/run-flats
Boot capacity  480 litres 450 litres 500 litres 
Kerbweight/payload/towing weight1,495/550kg/N/A1,720/425/750kg1,723/527/1,500kg
Turning circle/drag coefficient11.3 metres/0.27Cd10.4 metres/0.26Cd11.4 metres/0.26Cd
Basic warranty (miles)/recovery3yrs (unlimited)/3yrs3yrs (60k)/3yrs AA3yrs (60k)/3yrs
Service intervals/UK dealersVariable/15310k miles (1yr)/5112,000 miles (1yr)/8
Driver Power manufacturer/dealer pos.15th/24th 1st/1st N/A 
Euro NCAP: Adult/child/ped./stars95/84/78/5 91/85/80/5 86/85/67/5 
0-60/30-70mph 7.3/6.7 secs 7.8/7.1 secs 9.3/8.6 secs 
30-50mph in 3rd/4th  3.3/5.3 secs 3.0 secs (kickdown)4.0/6.9 secs 
50-70mph in 5th/6th  6.2/8.7 secs 4.3 secs (kickdown)7.5/11.4 secs
Top speed/rpm at 70mph 146mph/2,000rpm125mph/1,200rpm144mph/1,800rpm
Braking 70-0/60-0/30-0mph 47.1/34.4/8.6m51.0/37.0/9.2m48.3/34.6/8.9m
Noise levels outside/idle/30/70mph68/48/61/68dBN/A/N/A/52/63dB76/48/54/64dB
Auto Express econ (mpg/mpl)/range45.5/10.0/571 miles47.1/10.4/684 miles42.7/9.4/695 miles
Govt urban/extra-urban/combined 48.7/74.3/61.4mpg61.2/61.4/64.2mpg50.4/76.3/64.2mpg
Govt urban/extra-urban/combined 11.5/15.9/13.8mpl13.5/13.5/14.1mpl11.1/16.8/14.1mpl
Actual/claimed CO2/tax bracket166/120g/km/18%139/103g/km/12%177/114g/km/17%
Airbags/Isofix/park sensors/cameraSix/yes/rear/£330Eight/yes/yes/yesSix/yes/yes/yes
Auto box/stability ctrl/adaptive cruise£1,550/yes/£620Yes/yes/no £1,550/yes/£2,080*
Climate control/leather/heated seatsYes/£1,295/£325Yes/£1,400/£1,400Yes/yes/yes 
Metallic paint/LED lights/keyless go£645/no/£495£610/no/yes£660/£680/yes
Sat-nav/USB/DAB radio/Bluetooth£990/yes/yes/yes£1,995/yes/yes/yes£1,920/y/£2,760^/y
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