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 MR2 or Celica: thrilling mid-engined sports car prototype driven
Toyota MR2 design render (watermarked)

New Toyota MR2 or Celica: thrilling mid-engined sports car prototype driven

The new Toyota lightweight sports car will mark the return of a famous Toyota name, but will it be MR2 or Celica? Either way, we’ve driven it
News
11 Jun 2026
Don’t ignore Saab and Rover! Dead brands now make for serious used car bargains
Opinion - dead brands

Don’t ignore Saab and Rover! Dead brands now make for serious used car bargains

Auto Express’s senior news reporter explains why you shouldn’t dismiss a car from one of the many brands now defunct in the UK market
Opinion
4 Jun 2026
New Skoda Fabia facelift to transform sensible supermini with more style and hybrid tech
Skoda Fabia design render

New Skoda Fabia facelift to transform sensible supermini with more style and hybrid tech

Skoda’s sensible hatch was due to be axed by 2027, but now it’s here to say and is due to be updated as the brand works to keep its petrol-powered car…
News
25 May 2026
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

Most Popular

Best cars to own: Driver Power 2026 results
Driver Power 2026 header

Best cars to own: Driver Power 2026 results

The winners and losers in the UK's biggest automotive consumer survey. It’s the 2026 Driver Power results
News
10 Jun 2026
Electric car charging costs review launched by government
Electric car charging mega test - charging overhead

Electric car charging costs review launched by government

Government report to address concerns over long-term cost of EV charging
News
10 Jun 2026
Car Deal of the Day: Big-battery Vauxhall Frontera for a low £135 a month
Vauxhall Frontera Electric UK - front cornering

Car Deal of the Day: Big-battery Vauxhall Frontera for a low £135 a month

The Vauxhall Frontera Electric is a lot of car for not much cash. It’s our Deal of the Day for 10 June.
News
10 Jun 2026

Find a car with the experts