Skip advert
Advertisement
Car group tests

Peugeot 308 vs rivals

The new Peugeot 308 hatch takes on the SEAT Leon and Mazda 3

Downsizing in the name of efficiency is all the rage, but it’s taken Peugeot until now to launch a small-capacity turbo engine for its recently launched 308. The new e-THP unit is available with 108bhp or 128bhp, as tested here. Both versions emit less than 110g/km of CO2 and promise to return more than 60mpg.

Advertisement - Article continues below

Mazda, meanwhile, has added a new 1.5-litre SkyActiv engine to its superb 3 hatch. It’s not as powerful as its turbocharged rivals, but it promises strong throttle response, driveability and low running costs.

Setting the benchmark for our two newcomers is our reigning car of the year: the SEAT Leon. Fitted with a 1.2-litre TSI unit, it delivers performance, economy, sharp driving dynamics and value for money.

Click the links below for the full verdict on each car...

Peugeot 308 review

Mazda 3 review

SEAT Leon review

Now read our head-to-head group test results below...

Head-to-head

Under the bonnet

Peugeot’s 1.2-litre three-cylinder engine is given a boost courtesy of a turbo and stop-start. As a result, it’s 15 per cent more powerful and 25 per cent more efficient than the 1.6-litre unit it replaces.

The SEAT has a more traditional four-cylinder with less power, but the Leon’s lower kerbweight means strong performance. However, the Mazda avoids turbocharging with its “right-sized” 1.5-litre, which is smooth but lacks punch.

Light fantastic

Both Peugeot and SEAT have adopted the latest LED headlamp tech. Yet while this is available on Leon SE models and above, you’ll have to fork out for the 308 Allure if you want the brighter lights.

Advertisement - Article continues below
Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

308

2022 Peugeot

308

34,883 milesAutomaticPetrol1.6L

Cash £17,999
View 308
308

2020 Peugeot

308

65,241 milesManualDiesel1.5L

Cash £8,700
View 308
308

2024 Peugeot

308

11,090 milesAutomaticPetrol1.2L

Cash £18,400
View 308
308

2023 Peugeot

308

50,230 milesAutomaticPetrol1.6L

Cash £14,772
View 308

Mazda uses traditional halogens in the entry-level SE, but SE-L and Sport get standard-fit xenons.

Business costs

Our trio will be on most company car lists, but the SEAT rates well here. It’s CO2 emissions are higher than the 308’s, yet a lower price means there’s little to separate the two on BIK. The Leon’s 46.4 per cent residuals are strongest.

Verdict

1st place: SEAT Leon

The SEAT Leon’s reign at the top of the family car class continues. In 1.2-litre TSI guise, it offers a compelling blend of performance, quality and refinement. Factor in sharp handling, plenty of kit and strong residuals, and it’s a package that’s hard to beat.

2nd place: Peugeot 308

The runner-up spot goes to the Peugeot 308. It’s not as fun to drive as its rivals, but it’s hard to ignore the French model’s punchy engine, low CO2 emissions and long kit list. It’s attractively styled, inside and out, and better built than previous Peugeots.

3rd place: Mazda 3

Third place will be a bitter pill for Mazda to swallow. While the 3 is neatly styled, well built and enormous fun to drive, it’s undermined by sluggish performance and higher running costs. Space and practicality are also a letdown. 

 SEAT Leon 1.2 TSI SEPeugeot 308 1.2 e-THP ActiveMazda 3 1.5 SE Nav
On the road price/total as tested£16,970/£17,410£17,945/£17,945£17,295/£17,835
Residual value (after 3yrs/36,000)£7,849/46.4%£6,945/38.7%£7,401/42.8%
Depreciation£9,066£11,000£9,894
Annual tax liability std/higher rate£507/£1,015£501/£1,002£552/£1,103
Annual fuel cost (12k/20k miles)£1,732/£2,886£1,844/£3,074£2,120/£3,533
Ins. group/quote/road tax band/cost13/£330/C/£3014/£341/B/£2013/£339/C/£30
Cost of 1st/2nd/3rd service£169/£199/£169£16.99pm (3yrs/30k)£109/£219/£249
    
Length/wheelbase4,263/2,636mm4,253/2,620mm4,465/2,700mm
Height/width1,459/1,816mm1,457/1,804mm1,465/1,795mm
Engine4cyl in-line/1,197cc3cyl in-line/1,199cc4cyl in-line/1,496cc
Peak power/revs 104/4,500bhp/rpm128/5,500bhp/rpm99/6,000bhp/rpm
Peak torque/revs 175/1,400Nm/rpm230/1,750Nm/rpm150/4,000Nm/rpm
Transmission 6-spd man/fwd6-spd man/fwd6-spd man/fwd
Fuel tank capacity/spare wheel50 litres/foam53 litres/space-saver51 litres/space saver 
Boot capacity (seats up/down)380/1,210 litres470/1,309 litres364/1,263 litres
Kerbweight/payload/towing weight1,198/502/1,300kg1,370/380/1,300kg1,276/524/950kg
Turning circle10.2metres10.4metres10.6metres
Basic warranty/recovery3yrs (60k)/1yr3yrs (unltd)/3yrs3yrs (60k)/3yrs
Service intervals/UK dealersVariable/12812.5k (1yr)/30012.5k miles (1yr)/170
Driver Power manufacturer/dealer position24th/31st*14th/26th*8th/17th*
Euro NCAP: Adult/child/ped./assist/stars94/92/70/71/592/79/64/81/591/86/65/81/5
    
0-60/30-70mph9.4/9.6 secs9.0/9.0 secs10.4/10.2 secs
30-50mph in 3rd/4th2.9/6.0 secs4.2/6.2 secs6.3/8.3 secs
50-70mph in 5th/6th9.1/11.8 secs8.6/11.4 secs11.9/18.5 secs
Top speed/rpm at 70mph 119mph/2,400rpm127mph/2,300rpm113mph/2,500rpm
Braking 70-0/60-0/30-0mph 50.3/35.0/9.0m47.9/35.2/8.7m51.9/36.8/9.4m
Noise outside/idle/30/70mph61/39/59/69dB63/43/65/70dB58/42/63/72dB
Auto Express econ (mpg/mpl)/range41.0/9.0/451 miles38.5/8.5/449 miles33.5/7.3/376 miles
Govt urban/extra-urban/combined 47.9/65.7/57.6mpg48.7/72.4/61.4mpg43.5/65.7/55.4mpg
Govt urban/extra-urban/combined 10.5/14.5/12.7mpl10.7/15.9/13.5mpl9.6/14.5/12.2mpl
Actual/claimed CO2/tax bracket159/114g/km/15%170/107g/km/14%195/119g/km/16%
    
Airbags/Isofix/parking sensors/cameraSeven/yes/£265/noSix/yes/yes/noSix/yes/£158/no
Auto/stability/cruise control£1,250/yes/yes£1,000/yes/yesNo/yes/no
Climate control/leather/heated seats£350/£1,370/£350^Yes/no/noNo/no/no
Metallic paint/xenon lights/keyless go£495/£995**/no£525/no/no£540/no/no
Sat-nav/USB/DAB/Bluetooth£745/yes/£175/yesYes/yes/yes/yesYes/yes/yes/yes
Skip advert
Advertisement

New & used car deals

Peugeot 308

Peugeot 308

RRP £28,280Avg. savings £10,606 off RRP*Used from £10,995
Peugeot 208

Peugeot 208

RRP £17,520Avg. savings £6,536 off RRP*Used from £8,395
Peugeot 2008

Peugeot 2008

RRP £22,825Avg. savings £8,979 off RRP*Used from £9,495
Volkswagen Golf

Volkswagen Golf

RRP £24,625Avg. savings £2,462 off RRP*Used from £11,697
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Have you considered?

New Peugeot E-408 2025 review: Peugeot's best EV yet
New Peugeot E-408 2025 - front tracking

New Peugeot E-408 2025 review: Peugeot's best EV yet

Road tests
28 Aug 2025
Cupra Born review
Cupra Born - main image

Cupra Born review

In-depth reviews
19 Aug 2025
Used Skoda Fabia (Mk4, 2021-date) buyer’s guide: great value, comfy and spacious
Used Skoda Fabia - front

Used Skoda Fabia (Mk4, 2021-date) buyer’s guide: great value, comfy and spacious

Used car tests
22 May 2025

Most Popular

Car Deal of the Day: Open wide and say R, it’s a sporty Volkswagen Golf for £210 a month
Volkswagen Golf - front action

Car Deal of the Day: Open wide and say R, it’s a sporty Volkswagen Golf for £210 a month

The Volkswagen Golf has always been a quality choice, but now it won’t break the bank, even in R-Line trim. It’s our Deal of the Day for September 5
News
5 Sep 2025
Electric car battery repairs and health checks: how to keep thousands of EVs on the road
Battery health checks - Arnhem site 4 REVIVE MOBILE

Electric car battery repairs and health checks: how to keep thousands of EVs on the road

The truth about EV battery repair and why understanding state of health could revolutionise the electric-car market
Features
5 Sep 2025
New BMW iX3 to shake the EV world with huge 500-mile range
New BMW iX3 at the Munich Motor Show - front static

New BMW iX3 to shake the EV world with huge 500-mile range

The UK’s longest EV range at a tasty price: BMW’s game-changing iX3 is here
News
5 Sep 2025