A Satisfying Drive That Meets Expectations

Reducing engine displacement. Decreasing cylinder count. So-called downsizing seems to have taken root, but this time, I was quite surprised.BMW's 1.5-liter 3-cylinder engine in the 3 SeriesBecause they've put it in.

The 3 Series has traditionally been known as a sporty sedan that offers enjoyable driving with relatively high output. Therefore, I was half curious and half anxious (as a fan) about whether a 1.5-liter would be sufficient.

Other manufacturers also have examples, such as Volkswagen using a 1.4-liter engine in the Passat, which is nearly the same size (in fact, 140mm longer). Does BMW have a winning strategy? Or is this a "gamble car" to meet regulations on reducing CO2 emissions per kilometer driven?

The 1.5-liter model, named "318i," drives with a satisfying feel, perhaps contrary to expectations, or perhaps meeting them.

The "318i" designation has been a traditional model name. Hearing that alone might lead one to imagine a 2-liter 4-cylinder engine. Perhaps they used "318i" this time to conceal the fact that they've installed a small 1.5-liter 3-cylinder engine, leveraging the existing image? While such suspicions might arise, after driving it, one can't help but feel that "318i" is perfectly fitting.

Launched in Japan in the fall of 2016, the 318i is positioned by the company as a model that balances performance and environmental friendliness, alongside plug-in hybrids and clean diesels.

The Mediterranean Blue exterior color of the 318i Sport shown is an optional extra.

The 1,498cc 3-cylinder engine is the same one offered in the compact hatchback118iand the SUVX1It produces a maximum output of 100 kW (136 hp) and a maximum torque of 220 Nm, with a fuel efficiency of 17.2 km/L (JC08 mode).

This time, both the Sedan (starting from 4.09 million yen) and the Touring wagon (starting from 4.31 million yen) are available as the 3-cylinder "318i." Considering the balance of performance and price, the rear-wheel-drive hatchback "1 Series" (starting from 3.10 million yen for the 118i) is also an attractive option. However, the 3 Series possesses its own unique charm, considering its more generous body size and comfort.

The Premium Feel of the 3 Series is Present

The 318i, equipped with the 1.5-liter 3-cylinder engine, proved to be a model that met expectations at a high level. What impressed me first was its brisk acceleration from a standstill. With maximum torque available from 1,250 rpm, it delivers ample power even at very low engine speeds.

The 3-cylinder engine uses a standard turbocharger, not a twin-scroll. The tuning prioritizes low-end response, and its engagement feels natural. As you smoothly depress the accelerator, you experience seamless acceleration. In other words, it's surprisingly quick.

The 318i's engine is a 1,498cc 3-cylinder, producing a maximum output of 100 kW (136 hp).

The 3-cylinder unit incorporates silent shafts, effectively minimizing vibrations and noise during operation. The ride comfort is by no means poor, and the synergistic effect leaves a lasting impression: the 318i truly possesses the premium quality expected of a 3 Series.

In Europe, including Germany, strong acceleration is not always necessary once cruising speed is reached on highways. The 3 Series has traditionally offered models with smaller engines.

The transmission is an 8-speed automatic (no manual transmission option has been announced), driving the rear wheels.

The 318i Sport features optional Dakota leather seats (292,000 yen).

It's unlikely that BMW would want the driving enjoyment to be compromised by a smaller engine. Gripping the steering wheel of the 318i, you can genuinely feel a sense of the same driving pleasure found in models with more powerful engines. Furthermore, the nose feels noticeably lighter and more responsive when turning the wheel, likely a benefit of the 3-cylinder configuration.

The only difference compared to 4- or 6-cylinder engines is at higher RPMs. Above approximately 4,500 rpm, it naturally falls short in terms of power and quick acceleration. However, one must ask how many 3 Series drivers truly push their engines to the limit near the redline. For those who do, a 4-cylinder or higher model would be more suitable. Otherwise, the 318i offers ample enjoyment. This is perhaps a backhanded compliment.

No Lack of Power in the Touring Model Either

The 318i is available in both Sedan and Touring body styles. As you know, each has its own distinct following. The Sedan appeals to sedan lovers, and the Touring appeals to wagon enthusiasts. Therefore, offering both body types simultaneously is a positive development.

The Touring is about 70 kg heavier than the Sedan, but there's no sense of lacking power. Generally, heavier cars tend to offer a more comfortable ride due to reduced unsprung weight. However, in the case of the 318i, the difference between the two models is not significant. Perhaps the ride in the Sedan feels slightly smoother and more refined because the Touring's suspension is tuned a bit firmer.

The 318i Touring Luxury driven here is equipped with an electric panoramic glass sunroof (221,000 yen).

The Touring's cargo capacity is 495 liters.

The base model is the 318i SE (4.09 million yen for the sedan), which omits features such as the Driving Assistant package (including lane departure warning), Lane Change Warning, Park Distance Control, rearview camera, and electric front seats. Above that is the fully equipped 318i (4.46 million yen). Considering the difference in equipment, opting for the SE is a perfectly viable choice.

If the core value of the 3 Series lies in its identity as a sporty sedan, then perhaps the conventional choices would be the 4-cylinder gasoline-powered 320i (5.32 million yen) or the 6-cylinder 340i (8.13 million yen). However, if we interpret BMW Japan's "entry model" designation as referring to cost performance, then the 318i and 318i Touring, which offer a pleasant driving experience for daily use, are excellent options.

BMW 318i Sedan
BMW 318i Touring
Body Dimensions |
(Sedan) Length 4,645 x Width 1,800 x Height 1,440 mm
(Touring) Length 4,645 x Width 1,800 x Height 1,460 mm
Wheelbase | 2,810 mm
Engine | 1.5-liter inline 3-cylinder DOHC gasoline turbo
Maximum Output | 100 kW (136 ps) / 4,400 rpm
Maximum Torque | 220 Nm (22.4 kgm) / 1,250–4,300 rpm
Transmission | 8-speed AT
JC08 Mode Fuel Economy | (Sedan) 17.2 km/L (Touring) 17.0 km/L
Seating Capacity | 5 people
Drivetrain | FR
Price | (Sedan) From 4.09 million yen (Touring) From 4.31 million yen