This page is for anyone looking at a used BMW 420i Gran Coupe, or keeping one they already own. The new-car list has no entry for it, so the focus is on the costs you meet once the car is yours: road tax and car insurance each year, plus what the COE means on a used car.
The insurance prices are examples, read on 20 October 2026, for one stated driver and car. Your own details give your own price. Treat these as a guide to how the costs behave.
The car
The quote form has one entry: the BMW 420I Gran Coupe, with a 1,995cc engine. That is the car priced here. As it is not on the new-car list, there is no list price, power figure or body type on this page.
What the COE means for you
The price page states that, with a 1,995cc engine above 1,600cc, this car needs a Category B COE. Category B closed at S$130,100 in the October 2026 1st round.
You do not pay that on a used car; the first owner did. The asking price, though, reflects how long the COE has left to run. A car with few years left should cost less than one with many. If you think you might renew, the COE page has the latest results.
Road tax
For a 1,995cc engine, LTA's formula gives S$1,206.24 a year, before any age surcharge.
The surcharge matters more on a used car, because it starts once the car is past 10 years:
- Over 10 years: +10%
- Over 11 years: +20%
- Over 12 years: +30%
- Over 13 years: +40%
- Over 14 years: +50%
Check the registration date, and work out which step the car is on. A car one year short of a step will move up to it at its next renewal, so the bill you inherit may not be the bill you keep. The road tax page explains the sums.
Insurance for the example driver
The BMW 420i Gran Coupe price page prices this case:
- Car: 420i Gran Coupe, registered 3 years ago, private use, comprehensive cover
- Driver: aged 40, married, office job, driving 10 to 19 years
- Record: 50% no-claim discount (NCD), no claims
- Repairs: authorised workshop, no options
11 insurers price the car for that driver. The lowest premium is S$969.74 a year. The insurer whose lowest plan is the dearest asks at least S$3,994.05. That is S$3,024.31 more, or 312% on top. All prices include 9% GST.
The dearest lowest plan costs about four times the lowest premium. When you take over a used car, you can choose any insurer, so the seller's insurer need not be yours. A few prices on the page are estimates; confirm them on the insurer's own quote.
Excess
The excess is what you pay towards each claim. Most plans for this car carry S$600. Others sit at S$500, S$750 or S$800. One plan asks S$2,500, and one has no excess. Weigh the excess with the premium, especially on an older car.
What changes the price
The price page shows the lowest premium after one change:
- No NCD (0%): S$1,539.06, S$569.32 more
- 20% NCD: S$1,539.06, S$569.32 more
- Driver aged 27, 3 years' driving, 30% NCD: S$1,357.63, S$387.89 more
- Driver aged 65, 20 or more years' driving: S$969.74, the same
- A new car, registered this year: S$969.74, the same
- A car 8 years old: S$948.37, S$21.37 less
NCD is the lever that matters. With none, the lowest price is 59% higher. Your NCD belongs to you, not the car, so check that it carries over when you switch cars. A younger driver with a short record pays S$387.89 more.
The car's age makes little difference. An 8-year-old car costs S$21.37 less at the lowest price. These are only the lowest prices; other plans can behave differently. Ask for quotes on the actual car, with its real registration date, before you agree a price with the seller.
Against similar cars
For the same driver and car age, the price page compares six cars:
- Lexus NX: S$972.39
- Lexus RX: S$972.39
- Mercedes-Benz GLC: S$925.60
- Mercedes-Benz E-Class: S$861.03
- Toyota Voxy: S$793.75
- Toyota Harrier: S$742.90
The six average S$878.01. The 420i Gran Coupe is 10% above that. Four of the six cost less to insure, while the two Lexus models cost slightly more. For other BMW models, see the BMW car insurance page, or the cheapest cars to insure page for a wider ranking.
Costs you will need to estimate
- Parking: season parking at home, plus parking at work and in town.
- Petrol: depends on how far you drive and pump prices.
- ERP: depends on your routes and the time of day.
- Wear and repairs: ask for the service history, and check what is due soon, such as tyres, brakes or a battery.
- Depreciation: tied to what you pay and the COE years left when you sell.
Summary of yearly costs we can show
For the 420i Gran Coupe, dated:
- Road tax: S$1,206.24 a year, before any age surcharge (LTA's formula, checked 2026-10-19)
- Insurance, standard driver: from S$969.74 a year (20 October 2026)
- Insurance, no NCD: from S$1,539.06
- Insurance, car 8 years old: from S$948.37
If the COE needs renewing, Category B closed at S$130,100 in the October 2026 1st round. No list price is shown, as the car is not on the new-car list.
Before you buy: car insurance for the BMW 420I Gran Coupe
Before you drive off, get your car insurance through Shenton Brokers. Compare car insurance for the BMW 420I Gran Coupe to see today's prices from every insurer we compare and how they change with the driver and the car's age. Or get a quote with your own details.