Skip advert
Advertisement

New vs used executive cars: BMW 5 Series or BMW M3?

Big and brand-new or smaller and more powerful? We determine the best BMW to buy

If you’re searching for a sporty executive car, we’re willing to bet that you’re eyeing up BMW’s line-up. The vast majority of the Bavarian brand’s cars are great to drive, very well put together and appealing to look at, but with a budget of around £59,000, you may be facing a big dilemma. 

Advertisement - Article continues below

If you want to spend your budget on a brand-new car, you can nab a BMW 5 Series in plug-in hybrid 530e spec. Our expert road testers highly rate this model, so you’d think it’s an easy choice. However, you could also nab a full-fat BMW M3 for a similar price if you’re prepared to buy a used car. 

Both of these cars are top buys that are also great to drive, so which one should you pick? Take a look at our verdict below.

New: BMW 5 series

  • Our pick: BMW 530e M Sport  
  • Price: £55,230 (saving £5,595 on RRP)
  • Standard kit: 19-inch wheels, adaptive cruise control, wireless smartphone charging 
  • Key stats: 470.8mpg, 14g/km CO2, 5.9secs 0-62mph  
  • VED: £10 in first year, then £600  
  • Insurance group: 42  
  • Warranty: Three years/unlimited miles

Even after eight generations, the desirable BMW 5 Series continues to set the benchmark for executive saloons to aspire to.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

3008

2018 Peugeot

3008

59,000 milesAutomaticPetrol1.6L

Cash £11,960
View 3008
Ateca

2025 SEAT

Ateca

19,591 milesAutomaticPetrol1.5L

Cash £20,086
View Ateca
C-HR

2022 Toyota

C-HR

30,493 milesAutomaticPetrol2.0L

Cash £20,790
View C-HR
C3 Aircross

2019 Citroen

C3 Aircross

49,228 milesManualPetrol1.2L

Cash £8,999
View C3 Aircross

The latest car was launched last year, and is the biggest and most technologically advanced version yet. It’s certainly the most distinctive, too, with its vast front grille, imposing size and bold detailing meaning you’re unlikely to lose it in a car park. 

Inside, the 5 Series is packed with cutting-edge tech, including the brand’s bold curved digital dashboard. Like its predecessor, it sets the standard for quality and appeal, while the new car is even more spacious and features a list of standard kit (M Sport is the only trim level) that’s longer than both your arms. 

Under the eye-catching exterior there’s a choice of electrified powertrains, from the mild-hybrid 520i to the i5 EV. For many, the plug-in hybrid 530e’s mix of 63 miles of pure-electric running and range anxiety-busting 2.0-litre petrol engine offers the perfect balance of performance and efficiency. 

Advertisement - Article continues below

Regardless of the engine, the 5 Series remains the benchmark for driver engagement. With its meaty steering, excellent body control, strong grip and rear-wheel-drive agility, the big four-door German can do a passable impression of a sports car. The price you pay is a stiff low-speed ride, although in every other respect the BMW is a quiet and comfortable long-distance express.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Of course, this broad spread of abilities doesn’t come cheap, with prices starting at a whisker over £50,000. The 530e adds another £9,000 to this figure, although company car users will benefit from reduced tax cost versus a regular petrol car, if not the i5. Better still, BMW offers great-value pre-paid servicing packages, while our experts reckon the 5 Series will retain around 50 per cent of its original value after three years. Further peace of mind comes from the five-star Euro NCAP rating that is a result of the car’s comprehensive array of sophisticated driver-assistance systems.

New BMW 5 Series deals

Used: BMW M3

  • One we found: BMW M3 xDrive Competition  
  • Price: £58,690 
  • Mileage/year: 12,600/2023  
  • Standard kit: 20-inch black alloys, three-zone climate control, head-up display  
  • Key stats: 27.7mpg, 229g/km CO2, 3.5secs 0-62mph  
  • VED: £600  
  • Insurance group: 42

The BMW M3 combines supercar-slaying performance with sensible saloon practicality. Indeed, it makes a compelling used-car choice if you’re looking for high-octane family car thrills.

Advertisement - Article continues below

At just over 4.8 metres long, the M3 is around 200mm shorter than its 530e big brother. However, despite a little less legroom for rear-seat occupants, there’s still more than enough space. On top of that, its 480-litre boot gives away just 40 litres in carrying capacity. 

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Of course, if you’re in the market for an M3, you’ll be more interested in pace than space. Thanks to its snarling 503bhp turbocharged 3.0-litre straight-six, this saloon can blast from 0-62mph in just 3.5 seconds and go on to a limited top speed of 155mph.

With standard four-wheel drive, the BMW is poised and grippy; its uprated suspension offers cast-iron body control, scalpel-sharp precision and plenty of driver feedback. If you’re feeling brave, you can even switch off the four-wheel drive system and enjoy the handling balance of rear drive.

The M3 looks the part too, and with its muscular wheelarches, bespoke door mirrors and prominent bonnet bulges, the BMW leaves passers-by in no doubt about its potential. The cabin is almost a match for the 5 Series’ for upmarket appeal and tech, while the figure-hugging front sports seats and chunky steering wheel underline the BMW’s thoroughbred status.

Of course, all this performance doesn’t come cheap – although the 12,600-mile 2023 car we found offers a £25,000 saving over a new example. BMW claims just under 28mpg for the M3, while – as with the 530e – you’ll pay £600 a year in VED until the car's sixth birthday. 

In common with other cars from the brand, you can buy a pre-paid servicing pack, but it’s pricier for M cars, plus you’ll need to factor in extra cash for hard-working items such as the tyres and brakes. Still, at least you’ll have the balance of the car’s three-year warranty from new.

Used BMW M3 deals

Used - available now

M3

2024 BMW

M3

44,000 milesAutomaticPetrol3.0L

Cash £51,950
View M3
M3

2018 BMW

M3

59,540 milesAutomaticPetrol3.0L

Cash £28,500
View M3
M3

2024 BMW

M3

14,896 milesAutomaticPetrol3.0L

Cash £62,750
View M3

Executive car buying advice

Let’s get the obvious out of the way first – most people would be absolutely thrilled to have either of these classy and capable BMWs parked on their driveway. 

If the latest technology, low running costs, and ultimate cabin and boot space are your priorities, then the sensible 530e should be at the top of your list. However, if you're happy to let your heart rule your head, the sensationally fast and exciting M3 is hard to resist.

Looking to buy a new or used executive saloon? Here are the best deals...

Skip advert
Advertisement
Senior news reporter

A keen petrol-head, Alastair Crooks has a degree in journalism and worked as a car salesman for a variety of manufacturers before joining Auto Express in Spring 2019 as a Content Editor. Now, as our senior news reporter, his daily duties involve tracking down the latest news and writing reviews.

New & used car deals

Volkswagen Tiguan

Volkswagen Tiguan

RRP £35,385Avg. savings £2,911 off RRP*Used from £16,700
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £5,568 off RRP*Used from £12,295
Audi A3

Audi A3

RRP £26,295Avg. savings £2,513 off RRP*Used from £5,500
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £1,676 off RRP*
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Kia PV5 Passenger MPV undercuts the VW ID.Buzz by a huge £25k
Kia PV5 Passenger - show front

New Kia PV5 Passenger MPV undercuts the VW ID.Buzz by a huge £25k

New entry into the electric people carrier market undercuts the VW ID. Buzz by a significant margin
News
29 Apr 2025
Car Deal of the Day: BMW’s ultimate luxury SUV at an unusually low price
BMW X7 - front

Car Deal of the Day: BMW’s ultimate luxury SUV at an unusually low price

German firm’s flagship SUV could never be called cheap but it is exceptional value at £735 a month – making it our Deal of the Day for Sunday 27 April
News
27 Apr 2025
New Volkswagen ID.3 Match 2025 review: attractive price boosts EV’s appeal
Volkswagen ID.3 Pure Match - front

New Volkswagen ID.3 Match 2025 review: attractive price boosts EV’s appeal

The value-focused Volkswagen ID.3 Match performs well and is easy to live with
Road tests
28 Apr 2025