# Infiniti Q50 — Used Car Buying Guide

AutoScout's analysis of the Infiniti Q50 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/infiniti-q50

## Verdict

- **Best value year**: 2018
- **Ideal trim**: Sport
- **Target mileage**: 40,000–60,000 miles
- **Max previous owners**: 3
- **Target price**: £10,500

## Why this model

The Infiniti Q50 is a bit of a hidden gem in the used executive saloon market. It offers a lot of luxury, comfort, and a distinctive style for significantly less money than its German rivals. Because Infiniti pulled out of the UK market in 2020, these cars have taken a huge hit in depreciation, making them a real bargain if you're looking for something a bit different and don't mind the potential for slightly trickier parts sourcing. It's well-built and offers a refined driving experience.

## What you should pay

Due to Infiniti's withdrawal from the UK market, the Q50 has suffered significant depreciation, making it an excellent value proposition on the used market. You'll get a lot more car for your money compared to a similarly aged and specced BMW or Mercedes. Prices are relatively stable now after the initial big drop.

## Which trim to buy

The Sport trim offers a fantastic balance of features, styling, and value. It typically comes with larger alloy wheels, a sportier suspension setup, more supportive sports seats, and often a more comprehensive infotainment system. It gives the car a more aggressive look and feel without a significant price jump over the Premium trim, making it the sweet spot for a used purchase.

## What to check before you buy

- Infotainment system can be a bit clunky and dated
- Diesel Particulate Filter (DPF) issues if not driven on longer runs regularly
- Potential for parts scarcity and higher costs due to Infiniti's exit from the UK market

## Running costs

For the 2.2d diesel, you can expect around 55 mpg, which works out to about 13.2p per mile at current diesel prices (Feb 2026 estimate of £1.60/litre). Road tax for a 2018 model is £165 per year. Insurance will be comparable to other executive saloons like a BMW 3 Series or Mercedes C-Class. The main thing to consider for running costs is maintenance; while the Mercedes-derived engine is reliable, some Infiniti-specific parts might be harder to find or more expensive due to the brand's exit from the UK. It's worth finding a good independent specialist who is familiar with the brand.

## Key stats

- **Fuel Type**: Diesel
- **Horsepower**: 168 hp
- **Mpg**: 55 mpg
- **Reliability Score**: 6/10
- **Safety Rating**: 5-star Euro NCAP (2014)

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| SE | £29,000 | £8,000 | Dual-zone climate control; Cruise control; Bluetooth connectivity |
| Premium | £32,000 | £9,500 | Leather upholstery; Heated front seats; Front and rear parking sensors |
| Sport | £35,000 | £10,500 | Sport suspension; 19-inch alloy wheels; Sports seats |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £10,500 | 0% |
| 2027 | £9,660 | 8% |
| 2028 | £8,887 | 15% |
| 2029 | £8,176 | 22% |
| 2030 | £7,522 | 28% |

The Infiniti Q50 has already taken its biggest depreciation hit due to the brand's exit from the UK. Buying a 2018 model now means you're getting it at a significantly reduced price compared to its new cost. While it will continue to depreciate, the rate of loss in absolute terms will be much slower than its early years, making it a good time to buy for value.

Total value lost since new: 28%.

## Alternatives to consider

- [BMW 3 Series](https://autoscout.fyi/cars/bmw-3-series.md)
- [Mercedes-Benz C-Class](https://autoscout.fyi/cars/mercedes-c-class.md)
- [Lexus IS](https://autoscout.fyi/cars/lexus-is.md)

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