Skip advert
Advertisement
Long-term tests

Audi TT Final Report: 9,357 miles

A late problem with an exhaust sensor couldn’t blot our coupé’s copybook after a thrilling 12 months on our fleet

Our Audi TT has been getting a bit hot under the collar lately – and it’s got nothing to do with fiery volcanic ash in the atmosphere or the UK’s sizzling summer weather.

Rather, the temperature was rising under the coupé’s stylish bodywork. And according to the car’s manual, when two amber warning lights started flashing on the TT’s instrument panel, it was down to the diesel’s glowplug and the engine management system and catalytic converter. The handbook was unequivocal in the course of action. ‘Get it to your dealer IMMEDIATELY!’

Advertisement - Article continues below

I called my local franchise in Southend, Essex, to seek further advice. “It’s okay to drive, but bring it in asap – we wouldn’t advise you take it anywhere too far, say like John O’Groats!”

A couple of days later, the TT was in a service bay at Southend Audi, with the diagnosis that a faulty exhaust gas temperature sensor was the culprit. But the guilty part wasn’t in stock and another visit was needed the following week to do the job.

The return trip also allowed work to be carried out on a ‘mystery’ recall. The dealer listed it as a Code 23D8, which involved modifying the drainage tubes for the air-conditioning system.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

CX-5

2019 Mazda

CX-5

48,500 milesManualDiesel2.2L

Cash £12,180
View CX-5
Polo GTI

2026 Volkswagen

Polo GTI

21,052 milesAutomaticPetrol2.0L

Cash £20,949
View Polo GTI
XC40

2024 Volvo

XC40

33,629 milesAutomaticPetrol2.0L

Cash £25,699
View XC40
Astra Sports Tourer Electric

2025 Vauxhall

Astra Sports Tourer Electric

6,096 milesAutomaticElectric

Cash £18,499
View Astra Sports Tourer Electric

I thought I’d check out with Audi UK how many TTs were affected – and guess what? It assured me there was no such thing as 23D8. However, a quick trawl through various online forums suggests I’m not the only TT owner to have this work done.

Anyhow, the Coupé is now back to its usual reliable and brilliant self. We’ve clocked up a total mileage of 9,350 across the editorial team – and apart from the sensor and recall, the 2.0 TDI continues to run smoothly, powerfully and economically. We’re averaging just over 37mpg, which is great for this type of car.

Advertisement - Article continues below

Even after a year on our fleet, the TT still turns heads thanks to its beautiful lines, distinctive optional Petrol Blue paint finish and muscular 19-inch alloys. Be warned, though – those rims are all too easy to scuff if you spend a lot of time driving in town!

Inside, the TT’s beautiful leather-trimmed cabin has worn well. The seats are supportive and comfortable, no matter what size or shape the occupants.  And the Audi continues to surprise and impress everyone with its practical boot. It really is amazing what will fit in with the rear seats down – we even carried a bike in it!

But then, this TT is full of surprises – none more so than what lies under the bonnet. The 2.0-litre TDI engine sounds positively sporty for a diesel, yet it’s smooth, refined and has bags of torque for those occasions when you need to put your foot down. Yes, the TT ownership experience has been a joy – even when the temperature rises! I can think of only one car this summer that could replace it – and that’s the TT Roadster!
 

Extra Info

“The Audi is heading off into the sunset,and according to Glass’s Guide it should still be worth £24,750 – a drop of £2,865. That’s not bad after a year and 10,000 miles. The Government’s new road tax regime has also seen the cost of an annual disc fall by £10 since we took delivery last May.”

Ross Pinnock
Road test editor

Skip advert
Advertisement

New & used car deals

Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £2,398 off RRP*Used from £6,580
MG MG4

MG MG4

RRP £27,005Avg. savings £5,225 off RRP*Used from £8,695
Vauxhall Corsa

Vauxhall Corsa

RRP £19,705Avg. savings £6,173 off RRP*Used from £8,836
Toyota Yaris Cross
* 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, just 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, just 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
23 Jul 2026
New Dacia Spring confirmed for September reveal and super low price
New Dacia Spring - rear teaser

New Dacia Spring confirmed for September reveal and super low price

The new Spring will be based on the adorable Renault Twingo and built here in Europe
News
22 Jul 2026
New Range Rover Sport facelift spied with huge exhaust pipes
New Range Rover Sport facelift - front cornering

New Range Rover Sport facelift spied with huge exhaust pipes

One of our favourite luxury SUVs will pick up new styling and tech
News
22 Jul 2026