The choice between the BMW X1 and BMW X3 is mainly down to size and price: though both are premium family SUVs, the X1 is smaller and cheaper than the X3, though the margin between the two is perhapps not as great as you might imagine. The X1, now in its third generation, has grown to 4.5 metres in length, making it only 60mm shorter than its bigger sibling, the X3. This evolution means the X1 is no longer the compact urban crossover it once was, but rather a fully-fledged family SUV that rivals cars like the Nissan Qashqai in size.
The X3, meanwhile, remains BMW's mid-size SUV offering, building on the success of over 3.5 million units sold since the original launched in 2003. The latest fourth-generation model represents a logical evolution of the formula, using the same CLAR platform as the previous generation (albeit heavily revised) while incorporating BMW's latest design language and technology. Both cars offer comprehensive engine ranges including mild-hybrid petrols and diesels, plug-in hybrid variants and, in the X1's case, a pure-electric iX1 option, ensuring there's a powertrain to suit virtually every driving requirement and environmental consideration.
BMW X1 vs BMW X3
Practicality
The BMW X1 is surprisingly practical for families, with its sliding and reclining rear bench offering genuine flexibility to prioritise either passenger comfort or boot space. The rear seats fold flat in a versatile 40/20/40 configuration, enabling convenient through-loading for longer items. Rear passenger space accommodates two tall adults or three children comfortably, and rear-seat passengers have charging ports, air vents, and a centre armrest with cupholders. The boot offers a generous 540 litres of space, notably larger than rivals like the Audi Q3, Volvo XC40, and Mercedes GLA, with plug-in hybrid versions sacrificing just 10 litres to battery packaging.
The X3 takes practicality a step further, offering even more impressive rear legroom and headroom that will satisfy tall passengers. The rear bench is wide enough for three adults to sit reasonably comfortably, with the middle seat being wider and less raised than is typical for this class. Boot space measures 570 litres in standard models, though this drops to 460 litres in the 30e plug-in hybrid due to battery placement. The X3's rear seats fold in a 40/20/40 split, which is more flexible than the 60/40 split found in many competitors.
Both cars feature high-quality interiors that suit their premium positioning, though the X3 has a slight edge in terms of space and flexibility. The X1's sliding rear seats offer unique versatility in its class, while the X3's larger dimensions simply provide more room overall. For most families, either will prove more than adequate, but the X3's extra space makes it the better choice for those regularly carrying larger loads or taller passengers.
Driving Impressions
The BMW X1 offers a comprehensive engine range starting with the 148bhp sDrive18d diesel (0-62mph in 8.9 seconds) and extending to the 322bhp xDrive30e plug-in hybrid (0-62mph in 5.7 seconds). The entry-level diesel feels somewhat laboured under hard acceleration but proves perfectly adequate for everyday driving, while the 215bhp xDrive23i petrol engine provides a more spirited driving experience with almost hot-hatch-like performance when pushed. All engines feature mild-hybrid assistance, with the plug-in variants offering around 55 miles of electric-only range. The eight-speed automatic gearbox shifts smoothly across the range.
The X3 offers four main powertrain options, all featuring xDrive all-wheel drive and an eight-speed automatic transmission. The entry-level 20 petrol produces 205bhp with mild-hybrid assistance, achieving 0-62mph in 7.8 seconds, while the range-topping M50 delivers a thunderous 393bhp and 0-62mph in just 4.6 seconds. The 30e plug-in hybrid offers 295bhp with up to 56 miles of electric range, while the 20d diesel provides 194bhp, and will be best for high-mileage drivers. The 20 petrol feels adequate but works hard to move the X3's bulk, while the M50 delivers brutal acceleration with a glorious soundtrack.
With both cars, we've only driven them on adaptive suspension, which is trim-level-dependent on the X1 and optional across the range on the X3. Adaptive suspension allows drivers to choose between Comfort and Sport settings, with the former providing acceptable ride quality whilst the latter delivers impressive body control.
Both cars handle competently for family SUVs, as you'd expect given the BMW badge. In Sport mode they are even bordering on fun. The X1's suspension set-up, though capable, can feel overly firm compared to rivals like the Volvo XC40 or Mercedes GLA, while the X3 delivers a more pliant ride when set to Comfort mode, although both cars deliver the engaging driving experience you expect from a BMW.
Technology and Equipment
The BMW X1 comes with three main trim levels: Sport, xLine, and M Sport. Sport trim includes 18-inch alloy wheels, all-round parking sensors, reversing camera, LED headlights, powered bootlid, cruise control, dual-zone climate control and BMW's latest Operating System 8 on a curved touchscreen. The infotainment system features excellent graphics and includes sat-nav, Bluetooth, wireless Apple CarPlay and Android Auto, though it lacks the useful iDrive rotary controller found in some BMW models (including the X3), which is a shame. Popular options include the Technology Pack (folding mirrors, keyless entry, heated seats, wireless charging) and the Comfort Pack (electric seat adjustment, heated steering wheel), though these represent significant additional costs.
The X3 features BMW's latest dual-screen setup with a 12.3-inch driver display and 14.9-inch central touchscreen, both integrated into a curved unit. Crucially, the X3 retains the traditional iDrive rotary controller alongside shortcut buttons, making it safer and easier to operate when driving compared to the X1's touchscreen-only approach. Standard equipment on the entry-level xLine trim includes LED lighting, power-folding mirrors, powered tailgate, three-zone climate control, heated sports seats and comprehensive infotainment system with wireless phone charging and four USB-C ports. M Sport trim adds styling enhancements and vegan leather upholstery, whilst the M50 gets its own specification level with illuminated grille and upgraded interior finishes.
Both cars offer comprehensive safety equipment as standard, including adaptive cruise control and autonomous emergency braking, although more advanced driver assistance features require optional packs.
With both cars, it's frustrating that so many desirable features are bundled together into expensive option packs which will significantly increase the amount you pay. However, the X3's superior screen quality and retained iDrive controller give it a slight edge in the technology stakes.
Running Costs
The BMW X1 represents reasonable value in the premium SUV segment, though higher-specification models can become notably pricey with a few options boxes ticked. Fuel economy is competitive across the range, with the plug-in hybrids offering exceptional official figures thanks to their 55-mile electric range, though real-world efficiency will depend heavily on your ability to charge regularly.
The X3 commands a significant premium over the X1, with entry-level 20 petrol and 20d diesel models starting right at the top end of X1 prices. Fuel economy varies dramatically across the range: the M50 achieves up to 36.7mpg officially but will drop into the teens when driven enthusiastically, while the 20d diesel manages up to 48.7mpg. The 30e plug-in hybrid claims up to 313.9mpg officially, with 56 miles of electric range, but like any PHEV, real-world efficiency depends entirely on usage patterns and charging frequency.
The X1 offers better value for money, with lower entry prices and similar running costs to the X3 for equivalent powertrains. The X3's higher purchase price reflects its larger size and more premium positioning, however.
Verdict
The BMW X1 emerges as an excellent all-rounder that punches above its weight in the premium family SUV segment. Its generous 540-litre boot, flexible interior, and comprehensive engine range make it highly practical for family use, and its competitive pricing makes premium SUV ownership more accessible. The interior quality impresses, and the comprehensive powertrain lineup ensures there's an option for every requirement, from the efficient diesel variants to the powerful plug-in hybrids. However, the firm suspension and expensive option packs represent notable drawbacks, and the touchscreen-only infotainment system isn't as user-friendly as the X3's traditional iDrive setup.
The BMW X3 justifies its higher price point with superior space, refinement, and technology. The larger boot, more generous rear passenger space, and retention of the excellent iDrive controller make it the more practical and user-friendly choice. The driving experience is more polished, particularly with adaptive suspension, and the engine range offers everything from efficient daily driving to thunderous M50 performance. However, the significantly higher purchase prices and running costs make it a considerable financial step up from the X1. You pays your money...