Tips & Guides

Let the tank run dry and your diesel will finish the journey, then refuse to restart, because that lockout is written into European type approval. AdBlue is 32.5 percent urea in demineralised water, the warning arrives at least 2,400 kilometres early, and almost every expensive AdBlue repair starts with the wrong thing poured into the wrong tank.

Daytime running lights only exist at the front of your car, and on most cars already on European roads the tail lights stay dark until the sensor decides it is dusk. Heavy rain and road spray never trigger it, because the sensor measures brightness rather than how far you can see. Twisting the switch to dipped beam whenever the wipers run is the whole fix.

Your claims-history statement is a legal right, not a favour. It covers at least the preceding five years, your insurer has fifteen days to provide it, and since July 2025 it arrives on a single harmonised European template. An insurer in another member state has to treat it as equal to a domestic one, including when it applies discounts.

Lift off in gear and the injectors stop completely, so the engine costs you nothing while the wheels turn it over. Ask it to idle in neutral instead and it burns roughly half a litre to a litre an hour. The bigger saving is not the gear you choose, it is how early you see the red light.

Every 300 to 800 kilometres your diesel burns out its own soot filter, heating the exhaust to around 600 degrees for ten to twenty minutes without telling you. Switch off halfway and the soot stays behind while the fuel used to start the cycle ends up thinning your engine oil. Recognising the signs costs you one attentive week and saves a four-figure repair.

Petrol expands by about a tenth of a percent per degree, so a whole degree across a 50 litre fill is 50 millilitres, or about nine cents. The fuel sits in an underground tank at roughly the same temperature all year, and the pump's legal tolerance is five times larger than the effect you were worrying about.

The camera behind your rear-view mirror is aimed by the glass it is bonded to. Replace the windscreen and it points a fraction of a degree elsewhere, which is a full lane width at 100 metres. Calibration is a separate job with its own cost, and no warning light will tell you it was skipped.

Inspect your own lease car ten to twelve weeks before you hand it back, against the written return standard your contract names, because a scuffed bumper repaired privately costs a fraction of the same scuff on a leasing invoice. Find the second key and the charging cables now, and photograph everything on handover day.

New tyres go on the rear axle, whichever wheels your car drives, because a rear axle that lets go in the wet is the one most drivers cannot catch. Replacing a single tyre is fine when the other three are close in tread, illegal to mismatch on the same axle, and genuinely risky on all-wheel drive.