Skip advert
Advertisement

BMW 318i Coupe

Is our class favourite still good enough to stay at the top?

The BMW 3 Series Coupe has always appealed as much to the head as to the heart. By mixing sleek lines and engaging driving dynamics with four-seater practicality and low running costs, it is a zero-compromise choice.

A mid-life refresh last year only boosted the model’s desirability. Sharper looks, more powerful engines and an extra sprinkling of standard kit helped cement its place at the top of the sector. 

Advertisement - Article continues below

If the Mercedes wants to be crowned king of the coupes, then this is the car it must beat.

As with its rival, the 318i looks more like a low-slung two-door saloon than a jaw-dropping coupé in the mould of Peugeot’s RCZ or the Audi TT. Still, in racy M Sport specification, it gets a welcome injection of kerb appeal courtesy of a neat bodykit, while the stunning 19-inch alloys on our test car are a £530 option. And while it’s not the most attractive model on the market, the BMW is a grown-up choice that oozes understated class. Open one of the pillarless doors to climb aboard, and you’ll discover that the Coupé shares much of its cabin with other models in the 3 Series line-up. There’s the same attractively styled dash, solid finish and top-notch materials.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

C3 Origin

2022 Citroen

C3 Origin

9,130 milesManualPetrol1.2L

Cash £10,270
View C3 Origin
Q3

2023 Audi

Q3

100,000 milesAutomaticPetrol1.5L

Cash £14,750
View Q3
Q4 Sportback e-tron

2023 Audi

Q4 Sportback e-tron

29,661 milesAutomaticElectric

Cash £21,197
View Q4 Sportback e-tron
2

2021 Polestar

2

60,457 milesAutomaticElectric

Cash £18,197
View 2

It’s only in the rear that the car differs from its saloon and estate stablemates. A pair of deeply sculpted chairs replaces the usual bench, meaning the 318i is a strict four-seater. There’s little to choose between the BMW and Mercedes for space, with occupants in the back of both benefiting from a surprising amount of head and legroom. Plus, the 3 Series offers a useful 440-litre luggage area, which is only 10 litres short of the Mercedes’ capacity.

Advertisement - Article continues below

However, for most coupé owners practicality will take a back seat to performance – and this is one area where the BMW has to give best to its rival. The naturally aspirated 2.0-litre engine serves up less power and torque than the C-Class’s smaller turbo – at 141bhp and 190Nm – resulting in a disappointing display at the test track.

While the Coupe completed the sprint from 0-60mph in a respectable 9.0 seconds, its in-gear acceleration was leisurely. Take a look at our data table (opposite), and you’ll find that it needed 13.3 seconds to cover 50-70mph in top gear – that’s a full 3.2 seconds slower than the C180.

In the real world, this means you have to work the BMW hard to keep up with fast-flowing traffic, while overtaking moves need to be carefully planned. At least the four-cylinder unit is smooth-revving, and it is aided by the positive action of the six-speed manual box. And there’s more good news when you guide the car through a series of bends. 

As you would expect from a BMW, the Coupe benefits from meaty steering, sharp responses and strong grip. Yet on anything other than table top-smooth surfaces, the stiff suspension set-up can cause the car to be knocked off line in bends, sapping driver confidence.

Still, there are few complaints about the running costs of the 3 Series. At £29,605, it undercuts the Mercedes by £1,115, while low CO2 emissions of 146g/km make it the more cost-effective company car choice. Factor in its sleek looks, upmarket cabin and focused chassis, and the 318i Coupe is a strong contender for victory.

Details

Chart position: 2
WHY: It’s been around a while, but recent revisions mean 3 Series still has the X-factor. Classy looks, an upmarket interior and sharp chassis make it a desirable choice.

Skip advert
Advertisement

New & used car deals

Volkswagen Tiguan

Volkswagen Tiguan

RRP £38,050Avg. savings £3,250 off RRP*Used from £25,250
Skoda Kodiaq

Skoda Kodiaq

RRP £39,045Avg. savings £4,673 off RRP*Used from £13,698
Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £6,187 off RRP*Used from £11,999
Omoda 5

Omoda 5

RRP £24,040Avg. savings £1,532 off RRP*Used from £17,990
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Electricity VAT axe to make EV charging cheaper, but not if you can’t charge at home
Vauxhall Astra GSE connected to a home wallbox charger

Electricity VAT axe to make EV charging cheaper, but not if you can’t charge at home

VAT on domestic electricity will be scrapped from October, thus widening the gap between home and public charging
News
21 Jul 2026
New Jeep hybrid SUV aims to out-muscle Land Rover's Defender, with some help from China
Jeep D-segment SUV - front static

New Jeep hybrid SUV aims to out-muscle Land Rover's Defender, with some help from China

Want a Defender, but can’t stretch to one? Jeep’s new cut-priced family SUV should be cheap to buy, and to run…
News
20 Jul 2026
New Audi A2 e-tron drops some camo to reveal retro design
Audi A2 e-tron spy shot - front cornering

New Audi A2 e-tron drops some camo to reveal retro design

Audi’s cutting-edge new BEV promises to channel the innovation of its iconic predecessor
News
20 Jul 2026