The BMW 3 Series has long been considered one of the best all-round cars on sale in the UK. Practical, comfortable and great to drive, we’ve got no hesitation in calling it our favourite mid-sized executive saloon car. The 330e reviewed here takes that formula and adds a plug-in hybrid element, allowing users to reap the benefits of excellent potential fuel economy and far lower quoted emissions that ultimately means less company car tax to pay. It will come as no surprise that we name it one of the best plug-in hybrids.

However, it’s not just designed for company car drivers. The 330e is a great car in its own right thanks to a well-appointed cabin packed with the latest technology, as well as superb driving dynamics that aren’t far short of the regular petrol-only version. Admittedly, many potential customers may be looking at the brilliant all-electric BMW i4, but for those that still want the fallback of petrol the 330e is a great choice.

What’s more, cars built from the middle of 2024 saw a big jump in expected range – increasing from a claimed 37 miles to 63 miles. This is thanks to a larger battery (now 19.5kWh), but BMW also improved the potential charging speed with the inclusion of 11kW AC charging, meaning a 0-100% fill up can be done in as little as 2 hours 15 minutes.  

Direct alternatives include the Mercedes-Benz C-Class in 300e plug-in hybrid spec, Audi A5 Saloon e-hybrid (formerly known as the A4) and Skoda Superb PHEV. Indirect competitors, meanwhile, include electric cars like the Kia EV6 and Tesla Model 3, as well as petrol models like the Alfa Romeo Giulia.

We’ve driven the 330e extensively in the UK, and you can find out more about how we test on Parkers via our dedicated explainer page. Here’s what we found when we tested the car on some of the country’s most demanding roads.

What’s it like inside?

If you’re familiar with the standard BMW 3 Series, then you won’t find many surprises here. In fact, the only real thing to note is that boot space has been reduced. So you get a well-designed dashboard, hewn from robust materials that are also good to touch. It benefits from iDrive controls or touchscreen operation for the infotainment, while a small selection of buttons in the centre console handle the drive mode and charge management functions.

21

The saloon’s boot measures in at a pokey 375 litres compared to a regular 3 Series’ 480 litres. It’s the same story with the Touring (BMW’s term for an estate car) down 90 litres compared with the non-PHEV model for a total of 1,500 litres with the rear seats down. That compares with 1,510 litres for the Mercedes-Benz C300e Estate.

The size disparity is because the floor in the PHEV versions is higher than the non-battery versions in order to package the hybrid motors and power packs. That means you miss out on around two carry-on suitcases’ worth of space.

21

The infotainment system and digital dials are pretty much the same as the standard 3 Series, but they gain hybrid-related display options. However, aside from rearranging a few of the buttons on the centre console, this is the only difference in the passenger compartment when compared with the standard 3 Series interior.

This means that you get a massive infotainment screen running BMW Operating System 8.5, plus wireless Apple CarPlay and Android Auto as standard. This system works intuitively, until you need to change the heating. The specific temperature is nestled at the bottom of the screen, so it’s easy to adjust, but the fan speed and other controls are contained on a separate menu, which is irritating to use while driving. Most people will just end up using the (excellent) built-in voice control instead.

What’s it like to drive?

The 330e combines a 2.0-litre, four-cylinder turbo petrol engine with an electric motor that’s neatly integrated into the eight-speed automatic transmission. The petrol engine develops 184hp and the electric motor adds another 109hp. Very impressive, even if you can’t just add those two figures together to get the car’s total power output.

So, the 330e’s official power output is 252hp, which rises to 292hp when you activate the XtraBoost function for short periods of time under full acceleration. There’s no ‘push to pass’ boost button, it’s just activated by hoofing the accelerator in either the S or M transmission settings.

On the road, the results are impressive. Floor it from the lights and the 330e springs forward with real vigour. The 0-62mph time is 5.9 seconds but it also builds up rapidly once you’re at motorway speeds. You only get 10 seconds of XtraBoost, but that’s more than enough on UK roads, because you’ll be into three figures if you floor the throttle in it from 30mph.

21

One criticism we’d level at the 330e is that it isn’t quite as enjoyable to drive as a regular 3 Series. The four-cylinder engine sounds strained when worked hard and the 330e feels less agile in bends, presumably as a result of accommodating the additional weight of the hybrid batteries. BMW has made an attempt to augment its sound in Sport mode, with a nod to older six-cylinder cars, but it doesn’t really convince on that score.

Another is that the automatic gearbox can be hesitant to change down gears, especially if you’re approaching a roundabout where you might need to slow down then speed up suddenly. A final gripe would be the lumpy ride quality on M Sport cars – so much so that in Sport drive mode, it’s so firm and bouncy that on a typically rough B-road it can become backache inducing.

21

But, leave it in Comfort, or buy the standard Sport version, and it’s still a car that devours bends without blinking. It’s just that a tiny little bit of the 3 Series magic has gone missing from the process, as exhibited by the slightly light and artificial feel to the steering (even in the heaviest Sport setting). Even so, you’ll enjoy driving it quickly more than you would a Mercedes C-Class plug-in although that car is a bit more comfortable.

View full specs

What models and trims are available?

The 330e is available in Sport and M Sport specification. The former is the base model, but still comes with BMW’s sophisticated infotainment and cruise control. The latter adds larger 18-inch alloys and gives you the option to include BMW’s M Sport suspension which is lower and stiffer than the standard option.

21

Unfortunately, since 2024, you’re no longer been able to buy a 330e with four-wheel drive (called xDrive by BMW), with the choice being limited to rear-wheel drive only. For those looking to take the approved used approach to buying one, there’s very little difference between two- and four-wheel drive in day-to-day driving, but the xDrive model adds a bit of traction and extra reassurance in poor weather.

What else should I know?

The 330e is able to drive up to 63 miles on electric power alone, and there are an increased number of options to make the most of its battery. For example, you can set a guide percentage of power pack life you’d like to retain and the car will do its best to manage this on your behalf.

There is also an automatic setting, which works with the sat-nav guidance to choose the most appropriate points on your route to deploy the electricity. You can manually activate full electric mode up to 87mph and cruise there until the remaining range runs out.

21

As good as the range sounds, it’s worth remembering that newer rivals such as the Mercedes C-Class plug-in claims 71 miles on a single charge.

The official fuel economy for the 330e is a claimed a maximum of 353.1mpg in the WLTP real-world test, with CO2 emissions of just 25/km. You’ll need to be using the electric power a lot and mostly doing short journeys to get close to those figures, however. In the real-world, we achieved 50mpg on a 400-mile trip to Liverpool and North Wales from south London and this involved only one recharge.

You’ll also need to plug the hybrid part into the mains as many times as possible in between journeys – happily BMW now include an 11kW on-board charger to speed this up.

Is this still the best mid-sized company-focused plug-in hybrid you can buy? Our verdict on the BMW 330e can be found on the next page, where you can see whether we recommend the 3 Series PHEV over its younger rivals.