When you need to shift stubborn wheel nuts, rusted suspension bolts, or heavy-duty fixings, an impact wrench does in seconds what a breaker bar does in minutes — and without destroying your wrists in the process.
Cordless impact wrenches have come a long way. The best models now match or beat air-powered alternatives for raw torque, without the hassle of compressors and hoses. Here are the best options for UK tradespeople and serious DIYers.
Quick Picks
Best Overall: Milwaukee M18 FMTIW2F12 — class-leading torque, compact design, excellent control features
Best for Makita Users: Makita DTW300 — solid performer on the LXT platform, great value body-only
Best for DeWalt Users: DeWalt DCF894 — compact, powerful, proven reliability
Best Budget: Einhell IMPAXXO 18/400 — surprising performance for the price
Best for Heavy-Duty: Milwaukee M18 ONEFHIWF1 — when you need maximum torque for HGV wheels and industrial fixings
Best Impact Wrenches Reviewed
1. Milwaukee M18 FMTIW2F12
Best Overall
Price: £170-190 (body only) | £350-400 (with 2x 5.0Ah batteries)
Milwaukee’s mid-torque impact wrench sets the standard for this category. It delivers 745Nm fastening torque and 881Nm breakaway torque — more than enough for wheel nuts, suspension work, and most trade applications.
What sets it apart is the control. Four-mode drive control lets you dial in the right speed and torque for different applications. Bolt removal mode delivers full power to break fasteners loose, then automatically reduces speed to prevent the bolt flying off or cross-threading on reinstallation.
At just 152mm in length, it’s remarkably compact for this power level — critical when you’re working in tight engine bays or wheel arches. The brushless POWERSTATE motor is efficient and durable, and it runs on Milwaukee’s extensive M18 platform.
The friction ring socket retention makes socket changes quick without fumbling for pins or clips.
The downsides: Premium pricing, especially with batteries. Heavy at 2.3kg body weight. Overkill if you’re just doing occasional wheel changes.
Verdict: The best all-round cordless impact wrench available. If you can justify the cost, it won’t let you down.
2. Makita DTW300
Best for Makita Users
Price: £145-185 (body only)
Makita’s answer to the mid-torque category delivers 330Nm fastening torque and 480Nm breakaway torque. That’s less than the Milwaukee on paper, but still more than adequate for car and light commercial wheel nuts, brake caliper bolts, and general automotive work.
The brushless motor is smooth and efficient, with three speed settings for different applications. Impact rate tops out at 3,800 IPM, and the 1/2″ square drive accepts standard impact sockets. At 1.8kg (body only), it’s noticeably lighter than the Milwaukee.
It runs on Makita’s 18V LXT platform, so if you’re already invested in Makita batteries, this slots straight into your kit without additional expense.
Build quality is typical Makita — solid, reliable, and likely to survive years of use. The rubber-coated grip is comfortable, and the LED work light helps when you’re working underneath vehicles.
The downsides: Lower torque than competitors at this price point. No bolt removal mode. The socket retention can be a bit stiff.
Verdict: A solid choice for Makita platform users who need an impact wrench for regular automotive and light trade work. Not the most powerful, but reliable and well-priced.
3. DeWalt DCF894
Best for DeWalt Users
Price: £150-180 (body only)
DeWalt’s compact impact wrench delivers 447Nm fastening torque and 560Nm breakaway torque in a surprisingly small package. At 157mm in length, it’s one of the most compact 1/2″ impact wrenches available.
Three-speed settings give you control over output, and the brushless motor provides efficiency and longevity. The precision wrench mode delivers increased control for fastening applications, reducing the chance of overtightening.
The build quality is excellent — this feels like a serious trade tool. The grip is comfortable even with gloves, and the battery connection is solid without wobble.
Runs on the 18V XR platform with 250+ compatible tools.
The downsides: Torque sits between budget and premium options — powerful enough for most tasks, but you might want more for seized bolts or heavy commercial applications. No bolt removal mode.
Verdict: The smart choice for DeWalt platform users. Compact, powerful enough for most applications, and well-built.
4. Einhell IMPAXXO 18/400
Best Budget
Price: £100-130 (body only) | £160-200 (with battery and charger)
Einhell has improved dramatically in recent years, and this impact wrench punches well above its price point. It delivers 400Nm of torque — not class-leading, but enough for car wheel nuts and general workshop tasks.
The brushless motor is efficient and low-maintenance. Three speed settings provide some control over output. Build quality is surprisingly good for the price, with a comfortable grip and solid feel.
Part of Einhell’s Power X-Change system, which covers a wide range of tools if you’re building a budget-friendly cordless collection.
The downsides: Lower torque than premium options — may struggle with heavily corroded fasteners or commercial vehicle wheels. Less refined feel than Milwaukee or DeWalt. Battery and charger quality is adequate rather than excellent.
Verdict: Excellent value for occasional use or as a second impact wrench. Won’t match premium tools for heavy-duty work, but impressive for the price.
5. Milwaukee M18 ONEFHIWF1
Best for Heavy-Duty
Price: £350-400 (body only)
When mid-torque isn’t enough, this high-torque monster delivers 2,033Nm breakaway torque — enough for HGV wheel nuts, agricultural equipment, and industrial fixings that would defeat lesser tools.
The 1″ square drive handles larger sockets for heavy-duty applications. ONE-KEY integration allows programming of torque and speed settings via smartphone app — useful for workshop environments where consistent torque matters.
Despite the power, Milwaukee has kept the weight manageable at 3.8kg (body only). Four-mode drive control provides versatility, and bolt removal mode prevents fasteners flying off.
The downsides: Expensive, heavy, and overkill for typical automotive work. The 1″ drive means separate sockets from your 1/2″ collection. Battery drain is significant at full power.
Verdict: A serious tool for serious applications. If you’re working on trucks, plant equipment, or heavy industrial fixings, this is the one. For car wheels and light trade work, it’s far more than you need.
Comparison Table
| Model | Fastening Torque | Breakaway Torque | Drive | Weight (Body) | Price (Body) |
|---|---|---|---|---|---|
| Milwaukee M18 FMTIW2F12 | 745Nm | 881Nm | 1/2″ | 2.3kg | £170-190 |
| Makita DTW300 | 330Nm | 480Nm | 1/2″ | 1.8kg | £145-185 |
| DeWalt DCF894 | 447Nm | 560Nm | 1/2″ | 1.9kg | £150-180 |
| Einhell IMPAXXO 18/400 | 400Nm | 400Nm | 1/2″ | 1.8kg | £100-130 |
| Milwaukee M18 ONEFHIWF1 | 1,627Nm | 2,033Nm | 1″ | 3.8kg | £350-400 |
What to Look For
Torque: Measured in Newton-metres (Nm). Car wheel nuts are typically tightened to 80-150Nm, so a wrench with 400Nm+ breakaway torque handles them easily. For commercial vehicles, seized bolts, or industrial fixings, you’ll want 700Nm+.
Fastening vs Breakaway Torque: Breakaway torque (for loosening) is always higher than fastening torque. Pay attention to both numbers.
Drive Size: 1/2″ is standard for most automotive and trade applications. 3/8″ is more compact but less powerful. 1″ is for heavy-duty industrial use.
Speed Settings: Multiple settings let you dial down power for delicate work and crank it up for stubborn fasteners. More settings = more versatility.
Bolt Removal Mode: Automatically reduces speed once a bolt breaks loose, preventing it flying off or cross-threading. Worth having if available.
Weight: Matters when you’re working overhead or in awkward positions. Lighter is generally better, but heavier tools often have more power.
Platform Compatibility: If you’re already invested in Makita, DeWalt, or Milwaukee batteries, stick with that platform. Buying new batteries is expensive.
Impact Wrench vs Impact Driver
They look similar but serve different purposes:
Impact Wrench:
- 1/2″ square drive for sockets
- High torque for nuts and bolts
- Used for automotive work, heavy fixings
Impact Driver:
- 1/4″ hex drive for screwdriver bits
- Lower torque, higher speed
- Used for driving screws
You need both if you do varied work — an impact driver won’t remove wheel nuts, and an impact wrench is overkill for driving screws.
Do You Need Impact Sockets?
Yes. Standard chrome sockets can shatter under the repeated impacts, creating a dangerous situation. Impact sockets are made from softer, more ductile steel that absorbs the force without cracking.
Impact sockets are usually black (chrome-moly steel) rather than shiny chrome. Budget around £30-50 for a decent set covering common automotive sizes.
Cordless vs Air-Powered
Go cordless if:
- You need portability
- You don’t have a compressor
- You work in different locations
- You want convenience
Go air-powered if:
- You have a workshop with a compressor
- You need sustained high-power output
- You’re doing commercial-level work all day
- Budget is very tight (air tools are cheaper)
For most UK tradespeople and DIYers, cordless makes sense. Modern batteries deliver comparable power without the hassle of hoses and compressors.
Frequently Asked Questions
How much torque do I need for car wheel nuts?
Most car wheel nuts are torqued to 80-150Nm. A wrench with 400Nm+ breakaway torque handles them easily, even if they’re corroded or over-tightened. For vans and light commercial vehicles, aim for 500Nm+.
Can I use an impact wrench to tighten wheel nuts?
Yes, but always finish with a torque wrench. Impact wrenches can easily overtighten, which damages threads and makes future removal harder. Use the impact wrench to run nuts down, then torque to spec with a calibrated torque wrench.
What’s the difference between fastening and breakaway torque?
Fastening torque is for tightening. Breakaway torque is for loosening — it’s always higher because more force is needed to initially break a fastener loose than to tighten it.
Do I need a high-torque or mid-torque wrench?
For car wheels, brakes, and suspension work, mid-torque (400-900Nm) is plenty. High-torque (1,000Nm+) is for HGV wheels, industrial equipment, and agricultural machinery.
Will a 12V impact wrench work for wheel nuts?
12V compact impact wrenches (like the Milwaukee M12) can handle wheel nuts that are properly torqued, but may struggle with corroded or over-tightened fasteners. 18V is the safer choice for reliability.
Bottom Line
For most UK tradespeople and serious DIYers, the Milwaukee M18 FMTIW2F12 offers the best combination of power, control, and compact design. It handles everything from car wheels to heavy fixings without compromise.
If you’re already on Makita, the DTW300 is a solid choice that won’t let you down for typical automotive and trade work.
If you’re on DeWalt, the DCF894 delivers excellent performance in a compact package.
On a tighter budget, the Einhell IMPAXXO 18/400 offers surprising capability for occasional use.
And if you’re doing genuinely heavy-duty work — HGV wheels, agricultural equipment, industrial fixings — the Milwaukee M18 ONEFHIWF1 is the tool for the job.
Working on vehicles? Check out our Best LED Head Torch for Work and Best Rechargeable Work Light guides for better visibility under the bonnet and chassis.
