Best Impact Wrenches in the UK (2026)

Most UK cars are torqued between 110 and 140Nm and a Transit to 200Nm, but breaking one loose takes considerably more than that because of rust, salt and the seat bedding in. A 1/2in impact wrench with 400 to 600Nm of breakaway handles normal car wheel fasteners, and 600 to 800Nm gives you margin on corroded or over-tightened ones. Above 1000Nm is commercial vehicle territory. The DeWalts here publish 610Nm of breakaway, the Makita DTW300Z 580Nm and the Makita DTW190Z 320Nm, which is why the DTW190Z is described as the gentle one. The marketplace listings quote far higher numbers with nothing published behind them. Per-vehicle figures are on /calculators/wheel-nut-torque.

No, and this is the one thing on this page worth reading twice. Use the wrench to crack fasteners loose and to run them back down until they are snug, then finish with a calibrated torque wrench in a star pattern with the wheel on the ground. What a gun puts into a joint depends on battery charge, trigger time, the socket and extension fitted and whether the threads are dry, and none of that is measured or repeatable. Over-tightening stretches studs and warps discs, under-tightening lets a wheel work loose, and you have no way of knowing which one you just did. DeWalt prints the same warning in its own manual for the two wrenches at the top of this list. Re-check after 25 to 50 miles.

The drive end. An impact driver has a 1/4in hex collet and takes screwdriver bits and nutsetters; an impact wrench has a 1/2in square drive and takes impact sockets. Drivers are built for screws and top out far lower - DeWalt rates its compact DCF850 at up to 205Nm - and the hex bit or collet is what fails if you ask one to shift a wheel nut. Amazon UK mixes the two constantly, to the point that one DeWalt wrench on this page has a listing title calling it an impact screwdriver. If the tool you are looking at has a square post on the nose, it is a wrench. If it has a hex socket you push a bit into, it is a driver, and those are ranked on /impact-drivers.

The DTW300Z, unless you want a battery in the box. Makita gives the DTW300 580Nm of nut-busting torque, four power settings and an auto-stop, against the DTW190Z's 320Nm and a single speed range. The DTW190Z on this page comes with a 3.0Ah pack and a charger that the seller has added; the DTW300Z is body only. If you already own LXT batteries, the DTW300Z is the better tool for the money. The DTW300Z spent a while with no Amazon offer and is sold by a UK merchant, Terrier Tools, so returns go through them.

Not by the extended cover, no. Milwaukee on Amazon UK is third-party only, and Milwaukee's extended warranty cannot be registered against a marketplace purchase, so what you are left with is the seller's obligations and your consumer rights. There is a second thing to check on those listings: some are US stock carrying US catalogue codes. The listing badged 2855-20 is one of them - the code Milwaukee uses in Europe for that compact 1/2in wrench is M18 FIW2F12. A US code on a UK page means an import, which affects the charger, the paperwork and any service claim. No Milwaukee wrench is ranked on this page for those reasons.

No. Chrome hand sockets are hardened for wear resistance, which makes them brittle under impact loads, and one can crack or shatter on a gun. Impact sockets are the black chrome-molybdenum ones, designed to deform rather than fracture, and they are the only thing that should go on a 1/2in wrench. Two practical points: impact sockets are usually thicker-walled, so check they clear the nut recesses on alloy wheels, and deep sockets are what you need for long wheel bolts. Sets are covered on /socket-sets. The same applies to extensions and universal joints, which should be impact rated too.

Hog ring if you are changing sockets often on a driveway: push the socket on, pull it off, nothing to line up. Detent pin if you work on extensions, overhead, or anywhere a socket falling off would mean fishing it out of a subframe, because the socket is locked on until you depress the pin. The trade-off is speed against retention, and the detent pin needs sockets with a matching hole, which most but not all impact sockets have. DeWalt sells the identical wrench both ways here, the DCF921 with a hog ring and the DCF922 with a detent pin, with the same published torque, speed, weight and body length, so the anvil really is the only thing you are choosing between.

Black Friday falls on 27 November 2026 and is the deepest discounting of the year on power tools, followed by Boxing Day and the January sales. Late autumn is also when this tool gets bought for a practical reason rather than a promotional one: winter wheel and tyre swaps, and fasteners that have spent a year in road salt. The next window after that is the run-up to Easter on 28 March 2027 and the May bank holidays on 3 and 31 May, and Father's Day on 20 June 2027 moves a lot of mid-range tools. If you are buying through a business, the date that matters more is the tax year ending 5 April and what the Annual Investment Allowance lets you write off.