# Audi A7 — Used Car Buying Guide

AutoScout's analysis of the Audi A7 on the UK used-car market. Backed by 33 million DVSA MOT tests, current AutoTrader pricing, and depreciation curves derived from CAP/Glass's Guide data.

Live interactive report: https://autoscout.fyi/cars/audi-a7

## Verdict

- **Best value year**: 2021
- **Ideal trim**: S Line
- **Target mileage**: 35,000–55,000 miles
- **Max previous owners**: 2
- **Target price**: £26,449

## Why this model

The Audi A7 is a fantastic choice if you're looking for a car that combines executive saloon luxury with the practicality of a hatchback. It looks stunning, feels incredibly well-built inside, and offers a comfortable yet engaging driving experience. The 40 TDI diesel engine is a solid choice, offering a great balance of performance and fuel economy, especially for longer journeys. It's a premium car that holds its value reasonably well, and buying a 3-4 year old model like a 2021 means you've let someone else take the biggest hit on depreciation.

## What you should pay

Based on current UK market data for February 2026, a 2021 Audi A7 40 TDI S Line with around 30-50k miles typically sells for about £26,449. This is a sweet spot where the initial depreciation has settled, offering excellent value for a car that was significantly more expensive new. Prices can vary a bit depending on exact mileage, condition, and optional extras, but aim for this figure.

## Which trim to buy

The S Line trim is definitely the one to go for. It strikes the perfect balance between sporty looks, a great set of standard features, and value for money. You get a more aggressive body kit, larger alloy wheels, sportier suspension (which can be firm but handles great), and an upgraded interior with sports seats and S Line badging. It feels much more special than the entry-level Sport trim without jumping to the much pricier Black Edition or Vorsprung, which often don't offer enough extra value to justify the cost on the used market.

## What to check before you buy

- MMI (infotainment) system glitches
- DPF (Diesel Particulate Filter) issues if used for short trips
- AdBlue system faults
- Potential air suspension problems on models fitted with it

## Running costs

For a 2021 Audi A7 40 TDI, you're looking at roughly £0.14 per mile for diesel fuel (at current prices). Road tax (VED) will be around £190 per year. Insurance can vary quite a lot based on your personal circumstances, but expect to pay in the region of £800-£1,500 annually. Servicing costs for a premium Audi can be higher than mainstream brands, so factor in around £300-£500 per year for routine maintenance.

## Key stats

- **Fuel Type**: Diesel
- **Horsepower**: 204 hp
- **Mpg**: 48 MPG
- **Reliability Score**: Good (above average for its class)
- **Safety Rating**: 5-star Euro NCAP (2018)

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| Sport | £50,000 | £24,000 | LED headlights; MMI Navigation Plus with MMI Touch Response; Audi Virtual Cockpit |
| S Line | £54,000 | £26,449 | S Line exterior styling (sportier bumpers, side skirts); 19-inch alloy wheels; Sport suspension |
| Black Edition | £58,000 | £29,000 | Black styling pack (grille, window surrounds, badges); 20-inch alloy wheels; Flat-bottomed steering wheel |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £26,449 | 100% |
| 2027 | £23,539 | 89% |
| 2028 | £20,950 | 79% |
| 2029 | £18,646 | 71% |
| 2030 | £16,595 | 63% |

Buying a 3-4 year old Audi A7 like a 2021 model is a smart move for depreciation. The steepest drop in value happens in the first few years, so by buying now, you're letting the first owner absorb that hit. While it will continue to depreciate, the rate slows down significantly, meaning you'll lose less money year-on-year compared to buying new. It's a great way to get a premium car at a much more accessible price point.

Total value lost since new: 37.3%.

## Alternatives to consider

- BMW 6 Series Gran Coupe
- [Mercedes-Benz CLS](https://autoscout.fyi/cars/mercedes-cls.md)
- [Porsche Panamera](https://autoscout.fyi/cars/porsche-panamera.md)

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Source: AutoScout (https://autoscout.fyi). Part of a review of the UK used-car market across 500+ models.