Two significantly similar cars, no doubt about that. Still, each one has something different to offer. Having both cars powered by petrol engines and utilizing the 2-door cabriolet body style within the same 'Sports car' segment, the only major difference here really is their wheel drive configuration (rear for the Smart and front in the case of the Opel). The first one has a Smart-engineered powertrain under the hood, a 3-cylinder, 6-valves 82hp unit, while the other one gets its power and torque from a 4-cylinder, 16-valves 90hp engine designed by Opel.

The fact that the Opel got tested by the European New Car Assessment Programme (Euro NCAP), while the other contender didn't, offers a slight advantage, as the 4-star rating is better than none. Still, apart from the official crash test results there are other things we need to be aware of. Both vehicles belong to the sports car segment, which is generally classifying them somewhere in the middle safety-wise, still it doesn't help us solve our dilemma, does it? On the other hand, if we'd like to consider vehicle mass in this context too, which we definitely should, Tigra offers a potentially life-saving difference of 44% more metal.

I don't like generalizing things when it comes to reliability, although it does seem that Smart does have a slight advantage, all the models observed together. That's the official data, while our visitors describe reliability of Smart with an average rating of 4.3, and models under the Opel badge with 4.2 out of 5. The same official information place Roadster as average reliability-wise, and Tigra is more or less at the same level.We should definitely mention that owners of cars with the same powertrain as Roadster rank it on average as 4.0, while the one under the competitor's bonnet gets 4.1 out of 5.

Smart is undoubtly more agile, reaching 100km/h in 1.5 seconds less than its competitor. Still, it lacks the power to win the top speed competition, topping at 175 kilometers per hour, 5km/h less than the other car. When it comes to fuel economy the winner has to be Roadster, averaging around 5.1 liters of fuel per 100 kilometers (55 mpg), in combined cycle. We can't ignore that 20% difference compared to Tigra.

Smart appears just a bit more reliable, although the difference is truly marginal. The most important thing when deciding between any two vehicles should always be safety, both passive and active. In my opinion, everything taken into account, Tigra beats the other contender by far, making it the best choice without even considering other things. From there things take a different direction, with Smart offering somewhat better performance, just enough to call it quicker. To make things even better, it consumps less fuel! No mistake, whatever you decide here, but I'd still go for the Opel. In any case that's my personal view, built upon all the data available to me. What should decide here though is the way you feel about the two vehicles, and I hope you'll find my guidelines useful in the process. I suggest you spend two more minutes in order to find out which car, based on your needs and budget, would be picked by the virtual adviser™, among more than 12.000 different ones in our database.