Skip advert
Advertisement

Diesel isn’t always a dirty word

Jordan Katsianis explains why he thinks we don’t all have to buy petrol cars or EVs. There is another way that makes real sense for some buyers

Opinion - diesel

I’ll admit I’m a pretty fundamentalist petrolhead, so it took a while for me to accept that EVs were the right answer to many requests for new car-buying advice. However, in the past year or so I’ve found myself oddly campaigning for a very unexpected alternative: diesel. 

There’s no doubt that this technology has taken a colossal beating thanks to the bad press brought on by Volkswagen and its co-conspirators during the Dieselgate scandal. And it’s understandable that we, the British public, have probably had enough of being told it’s a solution to climate change only to be, in effect, lied to. But I’m here to tell you that diesel isn’t a dirty word for our short-term goals in reducing carbon emissions. 

Advertisement - Article continues below

However, I will caveat this by saying that, whether you live in a city, the suburbs or even the countryside, electric cars are by and large, the better option. Yet, for those of you who just do too many miles for an EV to make sense, or if you’re as yet unwilling to adjust to the behavioural changes that inevitably go hand in hand with making the switch to electric power, a diesel car can – for now at least – be a better option than a pure petrol model. Let me explain. 

Diesel cars became popular for one main reason. They generally use less fuel and emit less CO2 than an equivalent petrol car, and this is largely still the case. A good example are family SUVs: an Audi Q7 fitted with a V6 diesel engine is rated on the official WLTP cycle at between 34-35.8mpg, with CO2 emissions of around 208-217g/km. The petrol V6 sees this drop to 26.4-27.4mpg, while CO2 output rises to 235-243g/km. 

There is a plug-in hybrid variant that is significantly more efficient on paper, but its consumption figures skyrocket when the battery is depleted, because the petrol engine has to deal with the added mass of the hybrid system. So when it comes to long-distance cruising, a modern, properly maintained diesel-engined car is still often the best choice until other, more efficient options present themselves. 

If you mainly drive in towns and cities, or have a reasonable commute with at-home charging, buy an EV – it won’t just be good for your conscience, it’ll also save you money. But if you’re sitting on motorways at a constant cruise for more than 100 miles a day, a diesel is still best. Here’s hoping the Government will take this into account and make sure that any upcoming legislation is as nuanced as the answer is. 

Buy a car with Auto Express. Our nationwide dealer network has some fantastic cars on offer right now with new, used and leasing deals to choose from...

Skip advert
Advertisement
News editor

News editor at Auto Express, Jordan joined the team after six years at evo magazine where he specialised in news and reviews of cars at the high performance end of the car market. 

Skip advert
Advertisement

Recommended

New Toyota Celica confirmed: mid-engined sports car gets famous name
New Toyota sports car testing - front angled

New Toyota Celica confirmed: mid-engined sports car gets famous name

The new lightweight sports car will mark the return of a famous Toyota name. We’ve driven it, and it’s been spotted once again testing in a motorsport…
News
3 Nov 2026
New Renault Megane to take on the Tesla Model Y with a radical makeover
Renault Megane - front quarter exclusive image Avarvarii

New Renault Megane to take on the Tesla Model Y with a radical makeover

Hi-tech ‘software-defined’ C-segment model heralds a new design direction for Renault as the firm works to achieve a 465-mile range
News
2 Nov 2026
Kia Sportage vs Jeep Compass: family SUV hybrids face-off
Kia Sportage vs Jeep Compass - front tracking

Kia Sportage vs Jeep Compass: family SUV hybrids face-off

The Jeep Compass is back for a third outing, with familiar styling and Stellantis underpinnings. Here, it takes on perennial-favourite family SUV, the…
Car group tests
31 Oct 2026
Chery and JLR to forge “deeper” links as Chinese giant aims to “become British”
Chery Tiggo 4 - front cornering

Chery and JLR to forge “deeper” links as Chinese giant aims to “become British”

In a roundtable interview, Chery’s chairman has told Auto Express of his desire to design, engineer and build cars in Britain
News
26 Oct 2026

Most Popular

Honda CR-V prices slashed by thousands, ZR-V gets cheaper too
2026 Honda CR-V - front cornering

Honda CR-V prices slashed by thousands, ZR-V gets cheaper too

Honda has revealed updated pricing for the CR-V and ZR-V models, with the latter getting a particularly chunky discount
News
2 Nov 2026
New Renault Megane to take on the Tesla Model Y with a radical makeover
Renault Megane - front quarter exclusive image Avarvarii

New Renault Megane to take on the Tesla Model Y with a radical makeover

Hi-tech ‘software-defined’ C-segment model heralds a new design direction for Renault as the firm works to achieve a 465-mile range
News
2 Nov 2026
New Fiat Topolino Dolcevita arrives as dinky electric convertible for £9,500
Fiat Topolino Dolcevita - front 3/4

New Fiat Topolino Dolcevita arrives as dinky electric convertible for £9,500

The cute electric quadricycle can now be ordered as a convertible for a small additional outlay
News
3 Nov 2026

Find a car with the experts