Audi A6 Tax Calculator
Estimate UK Vehicle Excise Duty for an Audi A6 using current post-1 April 2017 rules. Enter CO2 emissions, fuel type, list price, current vehicle age, and how many years you plan to keep the car. The calculator estimates first-year tax, standard annual tax, and the expensive car supplement where applicable.
Enter your Audi A6 details and click Calculate to view your estimated tax breakdown.
Expert guide to using an Audi A6 tax calculator
The Audi A6 sits in a part of the market where taxation can vary more than many buyers expect. Two cars that look almost identical on a dealer forecourt can produce very different annual tax bills once you account for their emissions rating, original list price, and whether you are looking at a brand-new registration or a used example already several years old. That is why an Audi A6 tax calculator is useful. Instead of guessing from broad fuel categories or relying on outdated forum posts, you can estimate the likely Vehicle Excise Duty, often called road tax or VED, using the details that actually drive the bill.
For UK buyers, the most important dividing line is the registration regime. Cars registered from 1 April 2017 are taxed under the modern structure, which combines a first-year rate linked to CO2 emissions with a standard annual rate from year two onward. If the original list price was above £40,000, an additional expensive car supplement can apply for a fixed period. Because many Audi A6 models are priced well above that threshold when new, even modest differences in trim level can change the ownership cost in a meaningful way.
Key point: an Audi A6 tax estimate is usually not just about fuel type. CO2 emissions, list price, registration timing, and the current age of the vehicle all matter. A well-equipped A6 can attract the expensive car supplement even if its official emissions are relatively low.
How the calculator on this page works
This calculator is built for the current post-1 April 2017 UK VED framework, which is the most relevant scenario for many recent Audi A6 buyers. It asks for five simple inputs:
- CO2 emissions: used to estimate the first-year registration tax band.
- Fuel type: useful context, especially for electric and low-emission variants.
- Original list price: used to determine whether the expensive car supplement applies.
- Current age of the vehicle: needed to work out how many supplement years remain.
- Years you plan to keep the car: lets you estimate ownership-period tax, not just a single annual figure.
The result is more practical than a simple one-year number. You get a year-by-year breakdown, a total projected tax cost, and a chart showing how the burden changes over time. This is particularly helpful for comparing a nearly new Audi A6 against a new factory order. In some cases, a used car one or two years old may have a very different tax profile than a brand-new car with the same engine.
Understanding first-year VED for a new Audi A6
For newly registered cars, first-year VED is based mainly on CO2 emissions. Higher-emission vehicles attract much higher tax in the first registration year. Audi A6 diesel and petrol variants often sit in the middle or upper middle of the CO2 spectrum, which means the first-year bill can be substantially higher than the ongoing standard annual rate. Plug-in hybrid versions can be materially lower if their official CO2 figure sits in a low band, although buyers should still verify the exact certified number on the chosen trim.
The table below summarizes the official first-year VED structure commonly referenced for the current regime. These figures are the core reason a tax calculator matters so much when choosing between A6 powertrains.
| CO2 emissions (g/km) | First-year VED (£) | What it means for Audi A6 buyers |
|---|---|---|
| 0 | 10 | Applies to fully electric cars under current rules. |
| 1 to 50 | 110 | Relevant for some ultra-low-emission plug-in hybrids. |
| 51 to 75 | 130 | Still relatively low, but higher than the lowest hybrid band. |
| 76 to 90 | 270 | A moderate first-year charge. |
| 91 to 100 | 350 | Generally above what most larger executive saloons achieve. |
| 101 to 110 | 390 | Mid-tier entry point for conventionally powered cars. |
| 111 to 130 | 440 | A common area for efficient larger vehicles. |
| 131 to 150 | 540 | Many Audi A6 diesel and petrol trims land around here. |
| 151 to 170 | 1,360 | A big jump in first-year cost. |
| 171 to 190 | 2,190 | Performance-oriented models can enter this range. |
| 191 to 225 | 3,300 | Very high first-year taxation. |
| 226 to 255 | 4,680 | Mostly powerful specialist variants. |
| Over 255 | 5,490 | Highest first-year band. |
Source framework: UK government VED rate tables. Always verify the latest annual update before purchase.
The standard annual rate and the expensive car supplement
From the second year onward, most post-2017 cars move to a standard annual VED rate. That part is simple. The less obvious cost is the expensive car supplement, which applies when the original list price exceeded £40,000. This matters a great deal for the Audi A6 because many trims, especially S line, Black Edition, quattro, and higher-output engines, cross that threshold once options are included.
The supplement is not permanent. It generally applies for years two through six from first registration. That means buyers of used cars should pay close attention to vehicle age. If you are buying an Audi A6 that is already five years old, there may be only one supplement year left. If you are ordering new, you may face several years of elevated tax after the first registration year. Over a five-year ownership period, that can create a difference of well over a thousand pounds.
| Representative Audi A6 variant | Typical published WLTP CO2 range (g/km) | Likely first-year VED band | Supplement risk if list price exceeds £40,000 |
|---|---|---|---|
| Audi A6 40 TDI 204 S tronic | 147 to 154 | Usually £540 or £1,360 depending on exact trim figure | High, because many new examples exceed the threshold |
| Audi A6 Avant 40 TDI 204 | 149 to 157 | Usually £540 or £1,360 depending on exact configuration | High for well-specified cars |
| Audi A6 45 TFSI quattro | 169 to 178 | Usually £1,360 to £2,190 | Very high likelihood due to higher list price |
| Audi A6 TFSI e quattro plug-in hybrid | 36 to 48 | Usually £110 | Still possible if the list price is above £40,000 |
Representative model data varies by trim, wheel size, drivetrain, and factory options. Check the exact vehicle certificate or brochure figure before relying on any estimate.
Why two Audi A6 cars can have very different tax bills
Many buyers assume a diesel A6 will always cost more in tax than a petrol or hybrid A6. In reality, the answer depends on the precise emissions number and the list price. Here are the main variables that can change the bill:
- Engine choice: a lower-output diesel can be cheaper than a more powerful petrol if its CO2 band is lower.
- Drivetrain: quattro systems often add weight, which can push emissions up.
- Body style: Avant variants may differ slightly from saloon models.
- Wheel and tyre specification: larger wheels can influence the official emissions figure.
- Trim and options: these can push the original list price above £40,000 even when a base model sits below it.
- Vehicle age: whether the supplement is still active can dramatically affect annual ownership cost.
That is why a proper calculator uses both emissions and value. A buyer comparing two used Audi A6 examples should ideally run both through the same model. The lower purchase price car is not always the cheaper car to keep once tax is included.
How to find the right inputs
To get an accurate estimate, gather the following before you use an Audi A6 tax calculator:
- The official CO2 figure from the V5C logbook, vehicle advert, or manufacturer specification.
- The original list price, not the used purchase price. The supplement is based on the new list price.
- The first registration date or at least the vehicle’s age in years.
- Whether you want to include the first registration year or only future annual tax.
If you are unsure about the exact current tax class or tax status, use the government’s official vehicle tax service and checker rather than relying solely on dealer wording. Useful authoritative resources include the UK government vehicle tax rate tables, the main tax your vehicle service, and the check vehicle tax status tool.
Buying new versus buying used
If you are buying a new Audi A6, first-year VED and the expensive car supplement deserve close attention. A car with CO2 at 149 g/km and a list price above £40,000 may face a meaningful upfront tax cost plus several years of supplement. By contrast, a used car that has already passed some or all of that supplement period can be much cheaper to tax annually, even if it was expensive when new.
This is one of the most common situations where buyers make a mistake. They compare finance payments and fuel economy but ignore the timing of the tax cycle. Your ownership window matters. If you only plan to keep the car for two years, the supplement may represent a larger percentage of your annual running costs than if you plan to keep it for seven years.
Common mistakes when estimating Audi A6 road tax
- Using the used sale price instead of the original list price. The supplement test is based on the original new price.
- Ignoring trim-specific CO2 changes. Similar engines can sit in different first-year bands.
- Assuming all hybrids are cheap to tax. A6 plug-in hybrids can still face the expensive car supplement.
- Forgetting vehicle age. The supplement only runs for a limited period.
- Relying on outdated rates. UK VED rates can change annually.
Should you let tax influence your Audi A6 choice?
Tax should rarely be the only factor in an executive car purchase, but it should absolutely form part of the total cost of ownership calculation. On a premium car like the Audi A6, tax differences can run from modest to substantial depending on the specification. For some buyers, the most cost-effective route is a used example that has already moved beyond the most expensive tax years. For others, especially business or high-mileage users, the right hybrid or low-CO2 configuration can still justify a new purchase if it aligns with fuel savings, charging access, and depreciation expectations.
The smartest approach is to combine road tax, insurance, fuel, maintenance, and expected resale value into one ownership model. This page helps with the tax piece, which is often one of the easiest costs to estimate once you have the right vehicle data.
Final takeaways
An Audi A6 tax calculator is most useful when you use exact figures rather than assumptions. Start with the official CO2 emissions number, confirm the original list price, and think in terms of your real ownership period. If the car is above £40,000 when new, do not overlook the expensive car supplement. If you are buying used, age can work in your favour and materially reduce your projected annual cost.
Use the calculator above to compare different Audi A6 variants, then verify your preferred car against official government resources before purchase. That simple extra step can help you avoid unexpected running costs and choose the A6 that fits both your driving needs and your budget.