Audi A4 Insurance Group: Complete UK Guide to Ratings, Costs, and Cheaper Cover

Buying an Audi A4 can feel like finding the sweet spot between sensible transport and premium motoring. It is comfortable enough for long motorway journeys, smart enough to look at home outside an expensive hotel, and practical enough to handle everyday family life. Yet there is another number we should check before getting carried away with trim levels, alloy wheels, and quattro badges: the Audi A4 insurance group.

In the UK, car insurance groups run from 1 to 50, with lower numbers generally representing cars that insurers consider less costly or risky to cover. The Audi A4 sits somewhere in the middle-to-upper portion of that scale depending heavily on the exact engine, specification, transmission, model year, and performance level.

Current UK data illustrates just how broad that range can be. Some mainstream A4 versions have appeared as low as insurance group 19, while higher-powered versions can climb substantially higher. Finder lists A4 variants across groups 19 to 46, although the very top end includes much more performance-focused derivatives. Meanwhile, Honest John places the regular 2015–2025 A4 saloon range roughly between groups 20 and 32.

So, is an Audi A4 expensive to insure? Not necessarily. But choosing the wrong version can make the difference between a relatively manageable premium and a quote that makes us wonder whether the car secretly comes with its own racetrack.

Let's break everything down.

What Insurance Group Is an Audi A4?

There isn't one universal Audi A4 insurance group.

That is perhaps the most important thing to understand.

Two cars wearing the same A4 badge can have completely different insurance ratings. A modest petrol A4 with front-wheel drive may sit comfortably around the low 20s, while a powerful quattro model loaded with expensive equipment can move into the 30s or beyond.

Published UK insurance data currently places mainstream and performance-related Audi A4 variants broadly within groups 19 to 46 out of 50.

However, if we're talking specifically about conventional A4 saloons rather than the more extreme performance versions associated with the wider A4 family, the picture is less intimidating. Honest John reports that entry-level examples can start around group 20, with the highest regular A4 saloon versions reaching approximately group 32.

In other words, the badge alone tells us very little.

The registration number tells an insurer much more.

Typical Audi A4 Insurance Groups at a Glance

Different historical and current variants illustrate how engine choice changes the rating.

These figures should be treated as examples rather than universal ratings because the precise group depends on the vehicle's generation, model year and specification. Finder's current database, for example, lists the 1.4 TFSI SE and 2.0 TDI Ultra SE in group 19 and several 2.0 TDI and 35 TFSI versions around groups 20–21.

Why Checking the Exact Registration Matters

Suppose we're comparing two used Audi A4s advertised at almost identical prices.

One has a modest engine and straightforward equipment. The other has quattro all-wheel drive, considerably more power, larger wheels, premium lighting, and a higher trim level.

On the dealership forecourt they might look like twins.

To an insurer, they're more like cousins.

That's why we shouldn't simply search "Audi A4 insurance group" and assume the first number we see applies to the car we're considering. Using the registration number when obtaining quotes is much more reliable.

How UK Car Insurance Groups Work

The UK's insurance-group system is designed to help insurers estimate the relative risk and potential cost associated with different vehicles.

Cars are assigned to one of 50 groups.

Generally:

• Groups 1–10 tend to contain inexpensive, lower-powered cars.
• Groups 11–20 cover many ordinary hatchbacks, crossovers, and modest premium vehicles.
• Groups 21–30 include increasingly powerful or expensive models.
• Groups 31–40 are common territory for premium and performance vehicles.
• Groups 41–50 typically contain expensive, powerful, or specialised cars.

An Audi A4 therefore occupies an interesting middle ground.

It's clearly not competing with a tiny city car for insurance affordability, but an ordinary A4 is also nowhere near the insurance extreme occupied by many high-performance luxury cars.

Does a Higher Insurance Group Always Mean a Higher Premium?

Usually, but not always.

Think of the insurance group as one ingredient in a much larger recipe.

A group 30 vehicle will generally present more insurance risk than a group 15 vehicle, all else being equal. But insurers never consider the car in isolation.

Your actual quote can also depend heavily on:

• Your age
• Driving history
• No-claims discount
• Postcode
• Annual mileage
• Occupation
• Where the car is parked
• Previous claims
• Policy excess
• Named drivers
• Modifications
• Coverage level
• Insurance provider

That's why one driver may insure an A4 relatively cheaply while another receives a painful quote for exactly the same car.

Why Audi A4 Insurance Groups Vary So Much

The A4 has existed in numerous forms, engines, trims, and performance levels. We can't reasonably expect an economical entry-level diesel to carry the same risk rating as a substantially faster quattro model.

Several factors create the difference.

Engine Power

Power matters.

More powerful cars can accelerate harder and reach higher speeds, and insurers generally associate additional performance with additional claims risk.

That's why a modest A4 engine will usually sit in a friendlier insurance group than a performance-orientated version.

The relationship isn't always perfectly linear, though. Equipment, repair costs, security technology, and parts pricing can move ratings in either direction.

Trim Level

It might seem strange that leather upholstery, upgraded lighting, larger wheels, or sophisticated infotainment could influence insurance, but expensive equipment increases potential repair and replacement costs.

A bumper isn't merely a bumper anymore.

Modern premium vehicles can hide parking sensors, radar modules, cameras, brackets and electronic equipment behind apparently simple body panels. What looks like a minor parking accident can therefore become an expensive repair.

That's particularly relevant for premium cars such as the Audi A4.

Quattro All-Wheel Drive

Audi's quattro system is one of the brand's biggest attractions.

It can improve traction and give the A4 a wonderfully planted feeling on the road. But quattro versions are frequently associated with more powerful engines, greater mechanical complexity, and higher purchase prices.

Those factors can contribute to higher insurance groups.

For example, published data puts some 40 TDI quattro versions around group 31, noticeably above more modest A4 configurations.

Quattro Doesn't Automatically Mean Expensive Insurance

We shouldn't assume that every quattro badge sends an insurance quote through the roof.

Insurance classification depends on the entire specification rather than one feature.

Still, if cheap insurance is our priority, comparing an equivalent front-wheel-drive A4 against the quattro version before buying is worthwhile.

Audi A4 Petrol Insurance Groups

Petrol-powered A4s range from relatively modest models to seriously quick machines.

Older 1.4 TFSI examples can be especially interesting for buyers trying to balance premium-car appeal with manageable insurance.

Finder currently lists the A4 Saloon 1.4 TFSI SE in insurance group 19, making it one of the lower-group examples of the car.

Move toward stronger 2.0-litre engines and more luxurious trims, and the group normally rises.

Is the 35 TFSI Cheap to Insure?

Relatively speaking, it can be.

Some 35 TFSI versions fall around the low 20s. One published example puts the 35 TFSI Sport Edition around group 23, while other trim and year combinations may differ.

That's an attractive position for drivers who want respectable A4 performance without stepping into full performance-car insurance territory.

Audi A4 Diesel Insurance Groups

Diesel A4s have long been popular with motorway drivers, business users, and anyone covering substantial annual mileage.

Interestingly, diesel does not automatically equal a higher insurance group.

Some lower-powered diesel versions are among the most insurance-friendly A4s.

Finder lists the 2.0 TDI Ultra SE in group 19, while a 2.0 TDI S Line example falls in group 20.

That makes certain used diesel A4s surprisingly attractive from an insurance-group perspective.

When Diesel Groups Start Climbing

Add power and quattro, however, and things change.

A higher-output diesel can move into the upper 20s or low 30s. That is hardly shocking. We're asking the same basic platform to deliver significantly more performance and carrying more valuable mechanical components.

It's the automotive equivalent of ordering the same coffee with three extra espresso shots. The cup looks familiar; what happens afterwards is quite different.

Audi A4 S Line Insurance Group

S Line is one of the most searched-for A4 specifications because it combines sporty styling with the usability of a normal A4.

The good news?

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An S Line badge does not automatically mean frightening insurance.

Finder lists examples including the 2.0 TDI S Line at group 20 and the 35 TFSI S Line at group 20, although specific years and versions vary.

That's an important distinction between S Line and S4.

S Line vs S4: Don't Confuse Them

S Line is primarily a trim and styling package.

S4 is a genuine high-performance model.

That one letter and one number make a substantial difference.

An A4 S Line may retain a relatively ordinary engine. An S4 brings dramatically more performance and consequently tends to occupy much higher insurance groups.

For insurance purposes, they're different animals wearing similar suits.

Audi A4 Avant Insurance Group

The A4 Avant takes the familiar A4 formula and adds the practicality of an estate body.

Insurance groups may be similar to equivalent saloons, but we should never assume they are identical.

Engine output, trim level, drivetrain and model year remain decisive.

An Avant bought for family use could still be cheaper to insure than a sporty saloon if the estate has a lower-powered engine and the saloon has a high-performance specification.

Does the Estate Body Make Insurance More Expensive?

Not automatically.

The increased practicality of an Avant isn't inherently a major insurance risk. The vehicle's replacement value, engine, equipment and repair costs normally matter more.

When comparing A4 saloon and Avant models, run quotes on both registrations.

A five-minute comparison can save considerably more money than hours spent reading generic insurance averages.

Audi A4 Insurance Group by Generation

The A4 has been around for decades, so age creates another complication.

Older vehicles may have:

• Lower market values
• Less complicated lighting
• Simpler bumpers
• Fewer driver-assistance sensors
• Cheaper replacement parts

That sounds good for insurance.

But newer A4s may counterattack with better security, stronger crash protection and advanced accident-avoidance technology.

There isn't a simple rule saying old A4s are always cheaper.

B9 Audi A4 Insurance Groups

The B9 generation, introduced for the 2015 model year era and sold in various forms through the mid-2020s, offers a broad range of insurance ratings.

Honest John places conventional A4 saloon versions from this generation between approximately groups 20 and 32.

For many buyers, that's good news.

A regular B9 A4 isn't necessarily exceptionally expensive to insure despite wearing a premium badge.

Used B9 Buyers Should Compare Engines First

If we're shopping for a used B9, engine selection can influence long-term ownership costs more than chasing a particular cosmetic package.

Before buying, compare insurance quotations for two or three versions.

The cheapest car in the classifieds isn't always the cheapest car to own.

Is an Audi A4 Expensive to Insure?

Compared with an inexpensive supermini? Yes.

Compared with other premium executive cars? Not necessarily.

The A4 benefits from being extremely common, well understood by insurers, and offered in plenty of relatively modest configurations.

Entry-level versions around groups 19–20 are surprisingly approachable for a premium vehicle.

The problem comes when we climb the specification ladder.

More performance, larger wheels, quattro drivetrains and expensive trim can push us toward considerably higher insurance categories.

Insurance Group Isn't the Same as Insurance Price

This point deserves repeating.

A group 20 A4 doesn't come with a fixed insurance price.

A 45-year-old driver with a long no-claims history in a quiet postcode could receive a radically different premium from a 21-year-old driver living in a busy city, even though they're insuring identical cars.

The group helps shape the calculation.

It isn't the calculation.

Why Premium Cars Can Cost More to Repair

One reason Audi insurance isn't bargain-basement cheap is the cost of returning a damaged premium car to its original condition.

Consider a modern headlight.

Twenty years ago, replacing one could be a relatively straightforward job.

Today it may involve advanced LED technology, control units, adaptive functions and calibration. Add cameras or radar equipment positioned around bumpers and windscreens, and minor accident repairs can become much more complicated.

Insurers care about these costs because they're the ones paying after a covered claim.

Parts Prices and Repair Times Matter

Insurance groups account for more than horsepower.

The likely price of components and the labour required to repair the vehicle both influence risk assessment.

A car that takes longer to repair also creates additional costs such as courtesy-car expenses.

That's why two vehicles with similar power figures can land in different insurance groups.

Does the Audi A4 Have Good Security?

Modern Audi models generally benefit from sophisticated factory security systems, and security plays a role in insurance classification.

Strong standard security can partly counterbalance the A4's premium price and performance.

Honest John specifically notes the A4's strong standard safety equipment when describing why ordinary versions can remain comparatively reasonable to insure.

Still, insurers may consider theft patterns at a postcode level, so your location can have a surprisingly large influence on the final quote.

How Age Affects Audi A4 Insurance

Young drivers frequently face the toughest A4 insurance prices.

Why?

Statistically, younger and less experienced motorists tend to generate greater claims risk. Put them behind the wheel of a relatively powerful premium vehicle and insurers become even more cautious.

A low insurance-group A4 can help, but it cannot erase age-related risk.

Best Audi A4 Versions for Younger Drivers

If we're determined to own an A4 while keeping insurance manageable, we'd start with:

• Lower-powered engines
• Lower insurance groups
• Standard factory specifications
• Smaller wheels where possible
• Front-wheel drive rather than a high-output quattro model
• Older but well-maintained mainstream versions

The goal isn't simply to find the slowest Audi imaginable.

It's to avoid paying for performance we don't actually need.

Can Modifications Increase Audi A4 Insurance?

Absolutely.

Audi A4 owners frequently modify wheels, suspension, body styling, engine software, exhausts, and other components.

Insurers may treat modifications as increased risk.

A remap is particularly important because it can change the engine's performance beyond the factory specification used when the car originally received its insurance classification.

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Always Declare Modifications

Failing to disclose relevant modifications can create serious problems if we later make a claim.

Even apparently harmless changes should be discussed with the insurer where required.

It's better to ask an awkward question before buying the policy than discover an awkward answer after an accident.

How to Lower Audi A4 Insurance Costs

We can't change every variable an insurer considers, but we can improve several.

The biggest opportunity arrives before we buy the car.

Compare specific registrations rather than choosing the A4 first and investigating insurance later.

A practical strategy is to:

1. Shortlist three or four A4 versions.
2. Obtain insurance quotes for each registration.
3. Compare annual rather than only monthly prices.
4. Experiment with realistic voluntary excess amounts.
5. Enter accurate annual mileage.
6. Compare comprehensive policies from multiple providers.
7. Check whether paying annually reduces the total cost.
8. Build and protect a no-claims discount where appropriate.
9. Avoid unnecessary modifications.
10. Re-shop the market at renewal rather than automatically accepting the renewal quote.

Choose the Engine Before the Wheels

This sounds almost too simple, but it works.

Buyers sometimes obsess over 19-inch alloys while ignoring the fact that choosing a different engine could move them several insurance groups.

If ownership cost matters, start with the drivetrain.

Then choose the toys.

Don't Buy on Insurance Group Alone

There's also a limit.

Saving £80 per year in insurance isn't worthwhile if it pushes us toward an engine or model we dislike.

Insurance is only one component of A4 ownership alongside:

• Fuel
• Vehicle tax
• Servicing
• Tyres
• Repairs
• Depreciation
• Finance
• MOT costs

We should optimise the whole ownership package, not one number.

Audi A4 vs Audi A3 Insurance Groups

Drivers deciding between an A3 and A4 often assume the smaller A3 will automatically be cheaper.

Frequently it will be, particularly when comparing entry-level engines.

But specifications overlap.

A powerful A3 can easily sit in a higher insurance group than a modest A4.

Again, engine and exact derivative beat model-name assumptions.

Audi A4 vs BMW 3 Series and Mercedes C-Class Insurance

The BMW 3 Series, Mercedes-Benz C-Class and Audi A4 have spent years fighting for the same executive-car buyers.

Their insurance costs can also be relatively close when engines and performance levels are properly matched.

Rather than asking whether "Audi insurance is cheaper than BMW insurance," compare actual cars.

For example:

A4 35 TFSI vs BMW 320i vs Mercedes C200.

That's a meaningful comparison.

A4 35 TFSI vs BMW M340i?

Not so much.

Is Insurance Group 20 High?

Not in the context of a premium executive car.

A group 20 A4 occupies the middle portion of the 1–50 system.

We wouldn't call it cheap in absolute terms, but it's hardly alarming.

In fact, seeing some Audi A4 variants around groups 19–20 helps explain why the model can work for drivers who want a premium car without performance-car insurance costs.

Is Insurance Group 30 High?

Group 30 is significantly higher.

At this level, we should expect insurers to view the car as potentially more expensive to repair, replace, or claim against than a typical family hatchback.

Yet group 30 remains far removed from the very highest end of the scale.

For an experienced driver with a strong no-claims history, it may still produce perfectly manageable quotations.

What Is the Cheapest Audi A4 to Insure?

There is no permanently cheapest version because insurance data evolves and individual premiums differ.

Nevertheless, lower-powered SE, Technik and similar entry-level derivatives are sensible places to look.

Published listings show some historical 1.4 TFSI SE and 2.0 TDI Ultra SE saloons at group 19, with several other mainstream versions sitting around groups 20–23.

If insurance cost is a major purchasing factor, these are far more logical starting points than an S4.

The Cheapest Car May Not Give the Cheapest Quote

Here's the strange part.

Even after finding the lowest insurance group, another slightly higher-group version could produce a cheaper quote from a particular insurer.

Risk models differ between companies.

That's why insurance groups are excellent for narrowing a shortlist but poor substitutes for actual quotations.

Should We Avoid High-Group Audi A4 Models?

Not necessarily.

A higher insurance group doesn't make a car bad.

It simply means we should understand the financial consequences before purchasing.

If we want extra performance, quattro traction, luxury equipment or an S4, paying more for insurance may be perfectly reasonable.

The mistake isn't buying the expensive-to-insure version.

The mistake is discovering that it's expensive only after the keys are already in our pocket.

Used Audi A4 Insurance Checklist

Before buying a used A4, we should check:

• Exact insurance group
• Registration-specific insurance quotes
• Engine output
• Trim level
• Front-wheel drive or quattro
• Factory options
• Previous modifications
• Security equipment
• Annual road tax
• Service history
• Tyre replacement cost
• Likely maintenance expenses

Do that homework before paying a deposit and there are fewer financial surprises later.

The A4 should feel like a polished executive car, not a monthly subscription to unexpected expenses.

Final Thoughts on the Audi A4 Insurance Group

The Audi A4 insurance group can range considerably depending on the exact car we're considering. Mainstream versions can start around groups 19–20, while stronger engines and higher specifications move into the 20s and 30s. Performance-oriented derivatives can climb into the 40s.

That's actually one of the A4's strengths.

We aren't forced into high-performance insurance simply because we want an Audi badge. Carefully chosen petrol and diesel versions can offer premium comfort, strong motorway manners and sensible insurance-group ratings in the same package.

The trick is simple: shop for the insurance policy at the same time we shop for the car.

Check the exact registration, compare multiple versions, and obtain real quotes before making a decision. Insurance groups point us in the right direction, but our personal circumstances determine where the journey ultimately ends.

Frequently Asked Questions

1. What insurance group is an Audi A4?

Audi A4 insurance groups vary by engine, trim, age and specification. Published UK listings put some versions around group 19, while high-performance derivatives can climb into the 40s. Conventional 2015–2025 A4 saloons are generally reported between approximately groups 20 and 32.

2. Is an Audi A4 expensive to insure in the UK?

It can be more expensive than an ordinary small hatchback because the A4 is a premium vehicle with relatively costly components and stronger performance. However, lower-group A4 models around groups 19–23 can be reasonably affordable for experienced drivers.

3. Which Audi A4 has the lowest insurance group?

Some listed 1.4 TFSI SE and 2.0 TDI Ultra SE saloon variants fall into insurance group 19. Exact ratings vary by year and specification, so always verify the registration of the particular vehicle you're considering.

4. Does Audi A4 S Line cost more to insure?

Not necessarily by a huge amount. Some A4 S Line derivatives have appeared around group 20, although more powerful engines can carry substantially higher ratings. S Line should also not be confused with the high-performance S4.

5. Does quattro increase Audi A4 insurance?

Quattro itself doesn't automatically determine the insurance group, but quattro models are often paired with more powerful engines and more expensive mechanical equipment. Consequently, higher-output quattro A4s frequently sit in higher insurance groups than modest front-wheel-drive versions.

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