Land Rover Discovery S SD4 Auto (2021)
Estimated running costs and MOT pass rates from 64 MOT tests in 2024.
Annual Cost
£2,002
£167/month
MOT Pass Rate
88%
Good
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 18-32
1999cc Diesel
Solid Option
88% pass rate, £2,002/year to run. 6 points above average.
Check a specific Land Rover Discovery S SD4 Auto
Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.
Annual Running Costs
~48 mpg
Standard rate (from April 2017)
Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Good reliability. Occasional issues but generally solid. That's 6 points above the average of 82% across all models in our data.
88% of MOT tests on Land Rover Discovery S SD4 Autos from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 64 tests across the UK, retests included. The average mileage recorded at those tests was 53,297 miles.
Got a Land Rover Discovery S SD4 Auto you're looking at?
Enter the reg plate to check its specific MOT history, mileage, and health score.
How Does It Compare?
Mileage Analysis
53,297
Average miles
22,200
Expected for age
The average 2021 Land Rover Discovery S SD4 Auto had 53,297 miles on the clock at its 2024 MOT, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Looking at a specific Land Rover Discovery S SD4 Auto?
Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.
Best Year to Buy?
Of the years with at least 100 tests, the 2020 model has the highest MOT pass rate at 93%, while the 2019 model has the lowest at 86%. The 2021 scores 88%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
Land Rover Discovery S SD4 Auto by Year
Similar Cars to Consider
Check a Specific Land Rover Discovery S SD4 Auto
Enter a reg plate to get the full MOT history, health score, and mileage verification.
Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.
About the 2021 Land Rover Discovery S SD4 Auto
The 2021 Land Rover Discovery S SD4 Auto is a family car. Our records list a 1999cc diesel engine, though engines vary between versions. 64 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It sits in the bottom 15% of 2021 models for MOT pass rate.
With an average of 53,297 miles recorded at its 2024 MOT tests, Land Rover Discovery S SD4 Auto owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 Land Rover Discovery S SD4 Auto Fuel Costs
The 1999cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2021 Land Rover Discovery S SD4 Auto?
Total estimated annual running cost is £2,002 (£167/month), broken down as £1,397 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 Land Rover Discovery S SD4 Auto
At 5 years old, the Land Rover Discovery S SD4 Auto offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2020 model has the highest pass rate at 93%. Note: with only 64 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Medium riskDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
AdBlue System
Medium riskPost-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.
EGR Valve
Low riskExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2021 Land Rover Discovery S SD4 Auto stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Land Rover Discovery S SD4 Auto(2021) | 88% | £1,397 | £200 | Grp 18-32 | £2,002 |
| Ford Focus(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£178 |
| Ford Kuga(2019) | 91% | £1,397 | £200 | Grp 18-32 | £1,852-£150 |
| Volkswagen Polo(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£178 |
| Kia Sportage(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£178 |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2021 Land Rover Discovery S SD4 Auto
Is the 2021 Land Rover Discovery S SD4 Auto reliable?
Good reliability. Occasional issues but generally solid. 88% of MOT tests on 2021 Land Rover Discovery S SD4 Autos ended in a pass, from 64 tests (DVSA MOT data for tests in 2024, retests included). That's 6 points above the average of 82% across all models in the same data.
How much does a 2021 Land Rover Discovery S SD4 Auto cost to run?
Our estimate is £2,002 a year (£167 a month): £1,397 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2021 Land Rover Discovery S SD4 Auto?
88% of 64 MOT tests on the 2021 Land Rover Discovery S SD4 Auto ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2859th of 3,336 models first registered in 2021 (bottom 15%).
Which year Land Rover Discovery S SD4 Auto has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Land Rover Discovery S SD4 Auto has the highest MOT pass rate at 93% and the 2019 the lowest at 86%. Newer cars usually pass more often simply because they are younger and have done fewer miles.
What is the average mileage for a 2021 Land Rover Discovery S SD4 Auto?
The average mileage recorded at MOT tests on the 2021 Land Rover Discovery S SD4 Auto is 53,297 miles, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Related Land Rover Models
Explore other Land Rover cars or similar models in the same category.
Land Rover Range Rover Evoque
2016 · 1999cc Diesel
Land Rover Discovery Sport
2016 · 1999cc Diesel
Land Rover Range Rover Sport
2018 · 2995cc Petrol
Ford Focus
2019 · 1499cc Diesel
Ford Kuga
2019 · 1997cc Diesel
Volkswagen Polo
2019 · 1598cc Diesel
Related Guides
In-depth articles relevant to the Land Rover Discovery S SD4 Auto.
Petrol vs Diesel in 2026: Which Actually Costs Less to Own?
8 min read
Buying GuideCars That Hold Their Value UK 2026 (Up to 78% After 3 Years)
10 min read
Buying GuideIs an Extended Car Warranty Worth It? UK Guide for 2026
8 min read
Buying GuideFord Fiesta Common Problems (2026): What to Check Before Buying
13 min read
ReliabilityFord Puma Common Problems: 7 Issues That Could Cost £1,500+ (2026)
13 min read
Check a specific Land Rover Discovery S SD4 Auto
Enter the reg to see its MOT history, mileage check, and predicted costs.
Premium History Check
Buying a Land Rover Discovery S SD4 Auto? Our premium check covers:
- Stolen check (PNC)
- Outstanding finance
- Write-off history (Cat A/B/N/S)
- Previous owners count
With outstanding finance included