Joybuy Insights

Choosing car tools and diagnostic equipment: a practical guide for every garage

Reading a fault code, replacing a battery or removing a wheel may seem straightforward — until the tool doesn’t fit, lacks the power you need or can’t communicate with your car. Search for car tools and diagnostic equipment and you’ll also find plenty of products making bold marketing claims. A high voltage rating, lots of reset functions or a large number of pieces doesn’t tell you enough on its own.

Focus instead on specifications you can verify, vehicle compatibility and safe use. That way, you can avoid leaving an OBD2 scanner, impact wrench or hydraulic car jack unused in the garage.

Three common buying pitfalls

1. An OBD2 scanner won’t necessarily support every function

Your car may have an OBD2 socket, but that doesn’t mean every scanner can read all its systems. Some basic models only read engine management data. You’ll need a more advanced device for ABS, SRS, transmission or service resets.

Before you buy, check:

  • the car’s make, model and year;
  • which systems are supported;
  • whether special functions, such as EPB, BMS or TPMS reset, are available;
  • whether you’ll need an account, cable or paid software.

According to the product information, the XTOOL D5S supports CAN FD and FCA AutoAuth, among other features. However, users of vehicles that require AutoAuth must register for an account themselves and may have to pay for it. The manufacturer states that available functions can vary by make, model and year.

2. Maximum torque isn’t the same as tightening correctly

A cordless drill for car maintenance or an impact wrench with a high stated torque can be useful for wheel bolts and stubborn fastenings. However, don’t rely on one to tighten wheel bolts fully. Check the correct tightening torque in your vehicle documentation and, ideally, use a torque wrench to confirm it.

Look at the difference between:

  • maximum torque for loosening;
  • adjustable speeds for greater control;
  • the drive size, for example 1/2 inch;
  • the sockets and battery supplied;
  • battery capacity and charging time.

A high Nm figure is just one factor to consider.

3. A jack isn’t a permanent support

A hydraulic car jack or air jack is designed to lift a vehicle, not to support it while you work underneath. Use the jack on firm, level ground and check its rated capacity. Also look at the minimum and maximum lifting heights: a low sports car has different requirements from an SUV or van.

Products marked EN 1494 and CE provide verifiable information about the stated standards, but safe use still depends on the ground, the correct lifting points and the weight of the car.

Important specifications for car maintenance tools

Diagnostics: functions and compatibility

Choose a car diagnostic tool to suit how you’ll use it. A basic code reader may be enough for occasional checks. If you maintain several cars, live data, freeze-frame data, automatic VIN recognition and system diagnostics are more useful.

The XTOOL D5S lists four main systems: engine, transmission, ABS and SRS. It also lists 16 reset functions, including:

  • service and oil reset;
  • EPB reset;
  • BMS reset and battery registration;
  • SAS calibration;
  • TPMS reset;
  • throttle relearn;
  • ABS bleeding;
  • DPF/GPF regeneration, depending on vehicle support.

Treat these as functions the device may offer, not as a guarantee that they’ll work on every car.

Tool steel and sizing

For a car socket set, spanner set or garage tool kit, Cr-V steel, heat treatment and corrosion protection are useful specifications to check. Also check whether the set includes metric sizes, SAE sizes or both. Metric sizes are generally the standard choice in the UK.

A compact spanner set is handy in a cramped engine bay. A longer handle gives you more leverage, but you’ll need to take care not to damage bolts or threads. For an oil filter wrench, the adjustment range, jaw grip and space around the filter matter more than handle length alone.

Lifting capacity and range

When comparing jacks, always check:

  1. lifting capacity, for example 1.5 or 3 tonnes;
  2. minimum lifting height, important for low vehicles;
  3. maximum lifting height, useful for SUVs and vans;
  4. dimensions, weight and portability;
  5. whether it comes with a height extension or twin pump.

A jack with a suitable lifting range is more practical than a model with a higher capacity on paper alone.

Recommended choices for different users

Suitable for: Budget-conscious beginners
XTOOL D5S OBD2 Scanner

XTOOL D5S OBD2 Scanner

Why it suits this user: A good choice for car owners and DIY enthusiasts who want more than a basic engine fault code reader. The 5.45-inch screen and automatic VIN function make it easy to use.

How this product helps avoid the pitfall

The product information clearly sets out compatibility limitations and FCA AutoAuth requirements, so you can check these before buying.

Key benefit & highlights

Four main systems, live data, a built-in fault code library and, according to the product description, free lifetime updates.

Suitable for: Buyers looking for premium quality
CONENTOOL 21V Brushless Cordless Impact Wrench

CONENTOOL 21V Brushless Cordless Impact Wrench

Why it suits this user: A practical option if you regularly change tyres or loosen stubborn bolts in a garage or workshop.

How this product helps avoid the pitfall

Three speed settings and a variable trigger give you more control than a simple on/off switch. Use a torque wrench for final tightening.

Key benefit & highlights

Up to 800 Nm maximum torque according to the product description, a 1/2-inch drive, LED lighting and five impact sockets included.

Suitable for: Specialist jobs & intensive use
TCE 3 Ton Aluminum Alloy Horizontal Hydraulic Car Jack

TCE 3 Ton Aluminum Alloy Horizontal Hydraulic Car Jack

Why it suits this user: Designed for people working on different types of vehicle who need both a low entry height and extra lifting height.

How this product helps avoid the pitfall

The stated minimum lifting height of 85 mm and separate height extension make its working range clear before purchase. Always check your car’s support points.

Key benefit & highlights

3-tonne capacity, a lifting range of 85–465 mm, up to 541 mm with the extension and, according to the product information, EN 1494 and CE certified.

Suitable for: Budget-conscious beginners
DURATECH 121-Piece Mechanics Tool Set

DURATECH 121-Piece Mechanics Tool Set

Why it suits this user: A handy choice if you don’t yet have a complete basic set of tools for simple car and motorbike jobs.

How this product helps avoid the pitfall

The contents are listed clearly: metric and SAE sockets, ratchets, bits, hex keys, extensions and a storage case.

Key benefit & highlights

121 pieces, Cr-V steel according to the product description, two ratchets and a case for tidy storage.

Looking for more options?

We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and the applicable European safety regulations.

Frequently asked questions about car tools and diagnostic equipment

Do I need other car maintenance tools as well as an OBD2 scanner?

It depends on the jobs you’re doing. A scanner helps you read fault codes and live data, but it doesn’t replace mechanical tools. For basic work, useful additions include a socket set, spanner set, screwdrivers, jack, axle stands and, if needed, a torque wrench.

How long does garage tool kit last?

Its lifespan depends on the material, workload, storage and maintenance. Clean metal tools after use, lightly lubricate moving parts and store tool sets somewhere dry. With cordless tools, charging method, temperature and storage charge level all play a part. Always follow the manufacturer’s instructions.

Is an air jack suitable for home use?

An air jack can be a practical option if you have a suitable compressor. Check the required air pressure, lifting capacity and ground conditions beforehand. For occasional tyre changes, a hydraulic car jack is often simpler, provided its capacity and lifting height suit your vehicle. Always use suitable axle stands beneath a raised car.