Screenwash

Which wash gets your screen cleanest?

Sonax Clear View 1:100

Price £0.95p

Sonax 01798 344 888

www.sonax.com

As the name suggests, the 250ml pack will make a massive 25 litres. As a result, it is very cost effective. Only faint traces of bug and oil were left on our screen, where just 100ml of summer concentration was used. No other wash could match the year-round ability of this little wonder.

Buy it now for £6.99 »

Halfords Double Concentrate Screen Wash

Price £3.49

Impressively, this lasted two hours in our deep freeze before giving in. Many rivals worked out more costly in winter, too. While it struggled with our oil, Halfords’ concentrated solution shifted the bugs well. It wasn’t too pricey for summer, either.

Halfords 0845 762 6625

www.halfords.com

CarPlan Sub Zero Screenwash

Price £1.79

As the name suggests, this new CarPlan product did well in the freezing test – and dealt effectively with the dead bugs. It struggled a little on the oil, but keen pricing of both summer and winter mixtures makes this an award-winning debut for Sub Zero.

CarPlan 0161 764 5981

www.cares4cars.co.uk

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What we looked for

Even the most reluctant of car valeters needs screenwash. It’s a driving essential and vital for safety, as demonstrated by the number of cars which now have dash lights that indicate when the reservoir is empty.

So whether clearing road spray in winter or dead bugs in summer, you need screenwash, but it is hard to choose the right product, as packs and concentrations vary wildly. We tested 17 on a screen smeared with oil and insects, checked their resistance to freezing and worked out the cost for winter and summer mixes.