Skip advert
Advertisement

Audi A3 1.6 TDI

Eco tweaks make entry-level hatch the German company’s cleanest car ever

Find your Audi A3
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

If you want all the perks of a low-emissions car without any of the sacrifices or attention-grabbing branding, Audi has the answer. Its most frugal A3 ever is exempt from road tax but offers the same refined, polished driving experience the firm’s customers have become accustomed to. While the most basic Golf BlueMotion shares the same powertrain and economy figures, it can’t fly under the radar quite like the cleanest A3, or offer the same premium feel.

Advertisement - Article continues below

Here’s the proof that premium cars and rock-bottom emissions can go hand-in-hand! We have driven Audi’s most efficient A3 ever, capable of doing 74.3mpg and emitting 99g/km of CO2. But is there a price to pay for such incredible efficiency in terms of the ride and drive?

Available only as a three-door and in Standard trim, this fuel-sipping A3 builds on the existing 1.6 TDI – which, at 68.9mpg and 109g/km, is by no means a gas-guzzler itself. But thanks to a handful of eco modifications, Audi has managed to stretch the fuel economy even further and slip under the 100g/km barrier – and this means the car qualifies for road tax exemption.

Video: watch CarBuyer's video review of the Audi A3

[[{"type":"media","view_mode":"content_narrow","fid":"69227","attributes":{"alt":"","class":"media-image"}}]]

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

A3

2023 Audi

A3

28,455 milesAutomaticDiesel2.0L

Cash £23,767
View A3
A3

2023 Audi

A3

21,380 milesManualPetrol1.0L

Cash £16,088
View A3
A3

2024 Audi

A3

41,041 milesAutomaticPetrol1.4L

Cash £21,693
View A3
A3

2024 Audi

A3

36,956 milesAutomaticPetrol1.4L

Cash £17,757
View A3

On top of the start-stop and regenerative braking systems already fitted to the 1.6 TDI, the 99g/km model also has longer ratios for the five-speed gearbox, a reduced ride height and a flatter underbody to reduce drag. Smaller 15-inch alloys, rather than the usual 16-inchers, help improve aerodynamics, while low rolling-resistance tyres keep friction with the road surface to a minimum.

These tweaks combine to create a superbly refined and comfortable drive. Because ultra-low-profile tyres are the norm now, it’s easy to forget the benefits of a better rubber-to-metal ratio in your wheels. The cosseting ride blends perfectly with the higher-ratio box, which encourages you to cruise at low revs using light throttle inputs.

Elsewhere, the car feels just as good as any other A3. The steering is light and accurate, the gearchange has a familiar Audi precision to it, and the interior is top quality. As demonstrated by our model, add a few choice options such as sat-nav at £1,870, dual-zone climate control at £375 or an iPod connection at £250, and the price soon begins to rise.

Yet it really is all the family hatchback you’ll ever need – and will have cheaper running costs than anything comparable on the road. Usually, when it comes to eco-tweaked cars, there is some sort of penalty to pay – whether it be a hugely inflated price, woeful low-end throttle response or look-at-me branding on every surface. But Audi has managed to side-step every one of these pitfalls, and the result is a car which sets a new benchmark for efficiency without any apparent compromise.

Rival: Golf BlueMotion
The most basic three-door VW model costs £95 more than the equivalent A3, but has identical CO2 and economy figures. As with the Audi, it’s as good to drive as the standard versions.

Skip advert
Advertisement

New & used car deals

Audi A3

Audi A3

RRP £26,295Avg. savings £3,075 off RRP*Used from £10,295
Mercedes A Class
BMW 1 Series
Volkswagen Golf

Volkswagen Golf

RRP £25,235Avg. savings £2,542 off RRP*Used from £12,130
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Car headlights are too bright, but the Government can’t do much about it
Car headlights - opinion

Car headlights are too bright, but the Government can’t do much about it

Editor Paul Barker thinks car headlights are too bright but any solution to combat headlight dazzle is some way off
Opinion
5 Nov 2025
New Peugeot 308 hits the UK: facelifted EV and hybrid options start under £30k
Peugeot 308 facelift (grey) - front static

New Peugeot 308 hits the UK: facelifted EV and hybrid options start under £30k

The 308 SW estate car is also available to order now, and like the hatchback it’s cheaper than before
News
11 Nov 2025
New Mercedes GLC with EQ Technology prototype review: the perfect EV to fight back against BMW
Mercedes GLC with EQ Technology prototype - front

New Mercedes GLC with EQ Technology prototype review: the perfect EV to fight back against BMW

The all-electric Mercedes GLC with EQ Technology could be the car to tame the BMW iX3
Road tests
10 Nov 2025