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
Senior staff writer

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

GTI is so loved on the VW Golf, the failure of hot Polos is a real mystery
Opinion - Volkswagen GTI

GTI is so loved on the VW Golf, the failure of hot Polos is a real mystery

Jordan Katsianis explains why the Polo has always been a GTI underdog
Opinion
16 May 2026
Battery repair black hole is putting the future of EVs under threat
Technician working on EV batteries

Battery repair black hole is putting the future of EVs under threat

Experts call for end to culture of replace rather than repair amid concerns over second-hand cars
News
13 May 2026
Our EV obsession is holding back green mobility, efficient hybrids are the answer
Toyota Prius - cornering left

Our EV obsession is holding back green mobility, efficient hybrids are the answer

The call for more flexibility and a wider eco focus than the single path to electric is growing
News
12 May 2026
Car leasing makes a lot of financial sense, as long as you're not fussy
Opinion - car leasing

Car leasing makes a lot of financial sense, as long as you're not fussy

Richard Ingram argues that there are some great deals to be had on new cars if you’re not fussy and opt to lease your next set of wheels
Opinion
7 May 2026

Most Popular

New Jaecoo 3 has the Ford Puma and Renault 4 in its crosshairs
Jaecoo 3 - front (watermarked)

New Jaecoo 3 has the Ford Puma and Renault 4 in its crosshairs

Jaecoo is targeted the small SUV market with the new 3, and our exclusive images preview how it could look
News
18 May 2026
Ford’s fightback is on: five new EV and hybrid models for Europe by 2029
Ford future teaser

Ford’s fightback is on: five new EV and hybrid models for Europe by 2029

Ford’s fightback in Europe is coming, and it could see Fiesta and Focus return
News
18 May 2026
New Kia EV1 to arrive in 2028, and Hyundai Ioniq 1 won’t be far behind
Kia EV1 - front (watermarked)

New Kia EV1 to arrive in 2028, and Hyundai Ioniq 1 won’t be far behind

The Renault Twingo rival will use a bespoke EV architecture that’s being jointly developed by Kia and Hyundai
News
20 May 2026

Find a car with the experts